Manual breast pump and breast pumping assembly thereof

Abstract

The utility model discloses a manual breast pump and a breast pumping assembly thereof, the breast pumping assembly comprises a breast pump main body, the breast pump main body is provided with a first interface end and a second interface end which are communicated with each other, and the second interface end is used for being communicated with a milk storage container; the suction disc is sealed at the first interface end; one end of the handle is rotatably arranged on the breast pump main body; the locking assembly is connected between the middle part of the handle and the suction disc in a length-adjustable manner, and the locking assembly has at least two locking states with different lengths. According to the breast pump, the locking assembly can be locked at different lengths in the working process, so that the connecting length between the handle and the suction disc is adjustable, the breast pump has different gears, a user can adjust the gears of the breast pump according to actual requirements, the suction force of the breast pump is adjusted, and the use experience of the breast pump is improved.

Description

Technical Field

[0001] This application relates to the technical field of mother and baby products, and particularly relates to a manual breast pump and its milk suction component. Background Art

[0002] A breast pump is an instrument for pregnant women to use after childbirth. When it is inconvenient to breastfeed the baby, lactating women can use the breast pump to suck out breast milk from the breast and store it for later use, which can avoid waste of breast milk and facilitate the work and life of lactating women. Therefore, breast pumps are widely welcomed in the market.

[0003] The manual breast pumps on the market mainly include a handle, a negative pressure suction bowl and a milk bottle. Users control the deformation of the suction bowl by manually pressing the handle repeatedly to generate vacuum suction. However, since the vacuum suction of this kind of manual breast pump is always constant, if the suction is too large, it is easy to cause discomfort to the breast. If the suction is too small, the milk collection efficiency is low, which cannot meet the needs of different users and reduces the use experience of the manual breast pump. Utility Model Content

[0004] In view of the deficiencies of the existing technology, this application provides a manual breast pump and its milk suction component. Users can easily operate the manual breast pump to quickly adjust the suction level, meet the needs of different users, and improve the use experience of the manual breast pump.

[0005] To achieve the above object, this application adopts the following technical solutions:

[0006] A milk suction component of a manual breast pump, comprising:

[0007] A breast pump main body, the breast pump main body has a first interface end and a second interface end that are communicated with each other, and the second interface end is used to communicate with a milk storage container;

[0008] A suction disk, sealed to the first interface end;

[0009] A handle, one end of the handle is rotatably arranged on the breast pump main body;

[0010] A locking component, the length of the locking component is adjustably connected between the middle part of the handle and the suction disk, and has at least two locking states with different lengths.

[0011] As one of the implementation manners, open slots are respectively formed on both sides in the width direction of the handle, and the breast pump main body includes a rotating shaft portion arranged on one side of the first interface end, and both ends of the rotating shaft portion are respectively rotatably clamped in the corresponding open slots.

[0012] As one of the implementation manners, the suction cup is in a bowl shape and is embedded in the first interface end; one end of the locking assembly is connected to the bottom of the suction cup.

[0013] As one of the implementation manners, the breast pump body further includes a duckbill valve. A milk collecting tube is provided in the second interface end, and the duckbill valve is connected to the end of the milk collecting tube.

[0014] As one of the implementation manners, the locking assembly includes a self-locking switch and a first elastic member. The self-locking switch includes a housing and a movable ejector rod, a lock core, and a second elastic member provided in the housing;

[0015] One end of the movable ejector rod is connected to the handle. The lock core is axially movably connected to the other end of the movable ejector rod relative to the movable ejector rod. The lock core has a limiting portion for limiting the stroke of the movable ejector rod. The first elastic member is elastically compressed between the movable ejector rod and the lock core;

[0016] The second elastic member is used to push the lock core towards the movable ejector rod. The lock core has a first locking position and a second locking position. The second locking position is located on the side of the first locking position close to the suction cup;

[0017] At the first locking position, the second elastic member pushes the lock core to compress the first elastic member, and the movable ejector rod is abutted against the housing;

[0018] At the second locking position, the second elastic member abuts the lock core against the housing, and the first elastic member pushes the movable ejector rod to abut against the limiting portion.

[0019] As one of the implementation manners, the inner wall of the housing is provided with a first guide groove and a second guide groove alternately arranged in the circumferential direction. The second guide groove is shorter than the first guide groove. The movable ejector rod is slidably arranged along the axial direction of the housing;

[0020] The end portions of the movable ejector rod and the lock core facing each other are respectively provided with a first serrated surface and a second serrated surface. A first guiding portion is provided on the circumference of the lock core;

[0021] During the process of pressing the handle, the first serrated surface of the movable ejector rod slides along the second serrated surface, and the lock core is driven to rotate, so that the first guiding portion can selectively slide into different first guide grooves and second guide grooves after the thrust of the movable ejector rod is removed.

[0022] As one of the embodiments, the movable ejector rod includes a plurality of second guiding portions arranged circumferentially. A third guiding groove communicating with the end of the second guiding groove facing away from the suction cup is further formed in the inner wall of the housing. The depth of the third guiding groove is less than that of the second guiding groove. The first guiding portion can abut against the end of the third guiding groove when sliding into the second guiding groove.

[0023] Each of the first guiding groove and the third guiding groove is provided with a second guiding portion. The second guiding portion is slidably arranged in the corresponding first guiding groove and second guiding groove.

[0024] As one of the embodiments, a rib is formed between adjacent first guiding grooves and second guiding grooves, and the end face of the rib is an inclined surface.

[0025] As one of the embodiments, the lock core includes a limiting post. The movable ejector rod includes a hollow cylindrical body portion. The limiting post movably penetrates through the cylindrical body portion, and the limiting portion is arranged at the free end of the limiting post and located inside the cylindrical body portion to limit the stroke of the cylindrical body portion moving away from the limiting post.

[0026] Another object of the present application is to provide a manual breast pump, which includes a milk storage container and any one of the above-mentioned milk suction assemblies. The milk storage container is communicated with the milk suction assembly to collect the milk sucked by the milk suction assembly.

[0027] The locking assembly of the present application can be locked at different lengths during the working process, so that the connection length between the handle and the suction cup is adjustable, so that the breast pump has different gears. Users can adjust the gears of the breast pump according to actual needs, so as to adjust the suction force of the breast pump and improve the use experience of the breast pump. Description of the Drawings

[0028] Figure 1 Shows a schematic structural diagram of a manual breast pump according to an embodiment of the present application;

[0029] Figure 2 Shows an exploded schematic structural diagram of a manual breast pump according to an embodiment of the present application;

[0030] Figure 3 Shows a cross-sectional view of a manual breast pump according to an embodiment of the present application in a first use state;

[0031] Figure 4 Shows a cross-sectional view of a manual breast pump according to an embodiment of the present application in a second use state;

[0032] Figure 5 Shows a cross-sectional view of a locking assembly according to an embodiment of the present application in a first use state;

[0033] Figure 6 The figure shows a cross-sectional view of a locking component according to an embodiment of the present application in a second usage state;

[0034] Figure 7 The figure shows a schematic exploded view of the structure of a locking component according to an embodiment of the present application;

[0035] Figure 8 The figure shows a schematic diagram of the mating manner inside a self-locking switch according to an embodiment of the present application;

[0036] Figure 9 The figure shows a cross-sectional view of a locking component according to an embodiment of the present application in an exploded state;

[0037] The realization of the purpose, functional features, and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiments

[0038] In the present application, the terms "arranged", "provided with", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral structure; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, or there may be internal communication between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0039] The orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] Moreover, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific circumstances.

[0042] In order to make the objectives, technical solutions, and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] Figure 1 FIG. shows a schematic structural diagram of a manual breast pump according to an embodiment of the present application; Figure 2 FIG. shows an exploded schematic structural diagram of a manual breast pump according to an embodiment of the present application.

[0044] Referring to Figure 1 and Figure 2 , an embodiment of the present application provides a manual breast pump, which mainly includes a milk storage container 1 and a milk suction assembly 2. The milk suction assembly 2 can be operated by a user to suck milk. The milk storage container 1 is communicated with the milk suction assembly 2 and is used to collect the milk sucked by the milk suction assembly 2. For example, the milk storage container 1 can be a milk bottle or a milk bowl installed on the milk suction assembly 2, or a milk bottle or a milk bowl integrally provided on the breast pump housing, or a container communicated with the milk suction assembly 2 through a pipe body or the like.

[0045] Specifically, the milk suction assembly 2 mainly includes a breast pump main body 10, a suction cup 20, a handle 30, a locking assembly 40, and a breast shield 50. The breast pump main body 10 has a first interface end 101, a second interface end 102, and a third interface end 103 that are communicated with each other. The first interface end 101 is used to communicate with the suction cup 20, the second interface end 102 is used to communicate with the milk storage container 1, and the third interface end 103 is used to communicate with the breast shield 50. Among them, the suction cup 20 is sealed to the first interface end 101. One end of the handle 30 is rotatably provided on the breast pump main body 10. The length of the locking assembly 40 is adjustably connected between the middle part of the handle 30 and the suction cup 20 and has at least two locking states with different lengths.

[0046] When using the breast pump, the user rotates the handle 30 around the breast pump main body 10, so as to drive the suction cup 20 to deform through the locking assembly 40. The negative pressure generated by the suction cup 20 acts on the breast through the breast shield 50, so as to suck out the milk. The milk flows along the breast shield 50 into the breast pump main body 10 from the third interface end 103, and then flows out from the second interface end 102 and is collected into the milk storage container 1.

[0047] Figure 3 FIG. shows a cross-sectional view of a manual breast pump in a high gear usage state according to an embodiment of the present application; Figure 4 FIG. shows a cross-sectional view of a manual breast pump in a low gear usage state according to an embodiment of the present application.

[0048] As Figure 3, when the locking component 40 is in the locked state with a shorter length, the range of the rotatable angle of the handle 30 increases. When the user presses the free end of the handle 30 to the limit position close to the breast pump main body 10, the breast pump main body 10 can rotate through a larger angle, and the suction disk 20 undergoes a larger deformation. Therefore, the negative pressure acting on the breast of the breast shield 50 is larger, and more milk can be sucked at one time. As a result, the human body bears a larger suction force; as Figure 4 , when the locking component 40 switches to the locked state with a longer length, the length of the locking component 40 becomes longer. In the initial state, the free end of the handle 30 is closer to the breast pump main body 10 relative to Figure 3 the situation. When the user presses the free end of the handle 30 to the limit position close to the breast pump main body 10, the range of the rotatable angle of the breast pump main body 10 becomes smaller, and the deformation of the suction disk 20 is correspondingly smaller. Therefore, the negative pressure acting on the breast of the breast shield 50 is smaller, and the amount of milk that can be sucked at one time becomes less. As a result, the human body bears a smaller suction force.

[0049] Therefore, during the use of the breast pump, by adjusting the locking component 40 and locking it at different lengths, the connection length between the handle 30 and the suction disk 20 can be made adjustable, thereby adjusting the maximum deformation amount generated by the suction disk 20, so that the breast pump has different gears. The user can adjust the gear of the breast pump according to actual needs, thereby adjusting the suction force of the breast pump to meet the needs of different users and improving the use experience of the breast pump.

[0050] In one embodiment, opening grooves 31 are respectively formed on both sides in the width direction of the handle 30. The opening directions of the opening grooves 31 face the breast pump main body 10. The breast pump main body 10 includes a rotating shaft portion 11 provided on one side of the first interface end 101. Both ends of the rotating shaft portion 11 are rotatably clamped in the corresponding opening grooves 31.

[0051] When installing the handle 30, only need to rotatably connect one end of the handle 30 to the locking component 40, align the opening groove 31 in the middle part of the handle 30 with the rotating shaft portion 11, and make the rotating shaft portion 11 snap into the opening groove 31 along the opening groove 31, then based on the lever principle, the handle 30 can be used by operating the free end of the handle 30.

[0052] Exemplarily, the suction disk 20 is in a bowl shape and is embedded in the first interface end 101. The first interface end 101 accommodates the bottom and side parts of the suction disk 20 therein, and the edge of the suction disk 20 is sleeved on the outer edge of the first interface end 101, and the two are sealed together. One end of the locking component 40 is connected to the bottom of the suction disk 20, and the other end is connected to the handle 30. The rotation of the handle 30 drives the suction disk 20 to deform.

[0053] At the second interface end 102, the breast pump main body 10 is connected to the milk storage container 1. The breast pump main body 10 may further include a duckbill valve K. A milk collecting tube 102B is provided inside the second interface end 102, and the duckbill valve K is connected to the end of the milk collecting tube 102B. Due to the special structure of the duckbill valve K, milk can flow unidirectionally from the breast pump main body 10 into the milk storage container 1, while it is difficult for the milk in the milk storage container 1 to flow back into the breast pump main body 10 through the duckbill valve K.

[0054] It can be understood that the milk storage container 1 and the second interface end 102 can be assembled together by the cooperation of internal and external threads, or can be assembled by means of snap fasteners or the like.

[0055] At the third interface end 103, the breast shield 50 is detachably mounted to the breast pump main body 10 through the third interface end 103. It can be understood that in other embodiments, the breast shield 50 and the breast pump main body 10 can also be integrally provided. The breast shield 50 mainly includes a flange 51 and a soft rubber disk 52 connected to the end of the flange 51. The flange 51 is made of a relatively harder material, and the soft rubber disk 52 can be made of a soft material such as silica gel. The breast shield 50 is in a horn shape to better fit the human body.

[0056] Figure 5 The cross-sectional view of a locking assembly according to an embodiment of the present application in a first use state is shown; Figure 6 The cross-sectional view of a locking assembly according to an embodiment of the present application in a second use state is shown; Figure 7 The structural exploded view of a locking assembly according to an embodiment of the present application is shown.

[0057] Combined with Figures 5 - 7 As shown, in one embodiment, the locking assembly 40 includes a self-locking switch 41 and a first elastic member 42. The self-locking switch 41 includes a housing 411 and a movable ejector rod 412, a lock core 413, and a second elastic member 414 provided inside the housing 411.

[0058] Wherein, one end of the movable ejector rod 412 is connected to the handle 30, the lock core 413 is axially movably connected to the other end of the movable ejector rod 412 relative to the movable ejector rod 412. The lock core 413 has a limiting portion 415 for limiting the stroke of the movable ejector rod 412, and the first elastic member 42 is elastically compressed between the movable ejector rod 412 and the lock core 413.

[0059] The second elastic member 414 is used to push the lock core 413 towards the movable ejector rod 412. The lock core 413 has a first locking position and a second locking position. The second locking position is located on the side of the first locking position closer to the suction cup 20. Among them, the elastic modulus of the second elastic member 414 is greater than that of the first elastic member 42, so that the second elastic member 414 can generate a greater elastic force and can compress the first elastic member 42 when no external force is applied.

[0060] As Figure 4 and Figure 6 show, in the first locking position, the breast pump is in the low gear state. The second elastic member 414 pushes the lock core 413 to compress the first elastic member 42, and the movable ejector rod 412 abuts against the inner surface of the housing 411. In this state, the first elastic member 42 has a first compression amount, which is the largest; the movable ejector rod 412 has a first elongation amount extending out of the housing 411, which is the longest, that is, the length formed by the housing 411 and the movable ejector rod 412 is the longest. The acting force generated by the elongation of the second elastic member 414 pushes the lock core 413, the first elastic member 42, and the movable ejector rod 412 to the uppermost positions. All three move to their upper limit positions within the housing 411, so that the movable ejector rod 412 abuts against the uppermost limit position on the housing 411, and the lock core 413 is in the first locking position.

[0061] As Figure 3 and Figure 5 show, in the second locking position, the breast pump is in the high gear state. The second elastic member 414 abuts the lock core 413 against the second locking position below the housing 411. This second locking position is closer to the lower side (i.e., closer to the suction cup 20) than the first locking position of the lock core 413 shown in Figure 4 and Figure 6 . The first elastic member 42 pushes the movable ejector rod 412 to abut against the limiting portion 415. In this state, the first elastic member 42 has a second compression amount, which is the smallest; the movable ejector rod 412 has a second elongation amount outside the housing 411, and the second elongation amount is less than the first elongation amount, that is, the length formed by the housing 411 and the movable ejector rod 412 is shorter. Since the lock core 413 is limited by the housing 411 to the second locking position below, the compression amount of the second elastic member 414 increases, and the compression amount of the first elastic member 42 decreases. The acting force generated by the elongation of the first elastic member 42 pushes the lock core 413 and the movable ejector rod 412 away. The movable ejector rod 412 is pushed to the limit position where it is held by the limiting portion 415. The limiting portion 415 prevents the movable ejector rod 412 from continuing to extend. In this state, the movable ejector rod 412 cannot abut against the inner surface of the housing 411.

[0062] In this embodiment, the first elastic member 42 is used to cooperate with the limiting portion 415 when the lock core 413 of the self-locking switch 41 is locked at the lower first locking position in the high gear state of the breast pump. The first elastic member 42 pushes the movable ejector rod 412 upward to the extreme position and is pulled by the limiting portion 415, ensuring the uniqueness of the position of the movable ejector rod 412. When the user operates the handle 30, the movable ejector rod 412 transmits the force to the lock core 413, the housing 411, and the suction disc 20 in sequence through the limiting portion 415, and drives these structures to move upward synchronously. The suction disc 20 deforms to suck out milk; when the user removes the rotational force applied to the handle 30, the suction disc 20 restores its deformation, transmits the force to the lock core 413, the limiting portion 415, and the movable ejector rod 412 in sequence through the housing 411, and drives these structures to move downward synchronously, thereby driving the handle 30 to reset. During this process, the first elastic member 42, the second elastic member 414, and the limiting portion 415 cooperate to push the movable ejector rod 412 upward and limit it at a fixed position within the housing 411, ensuring the uniqueness of the positions of the lock core 413 and the movable ejector rod 412 within the housing 411.

[0063] As Figures 3 - 8 shown, the self-locking switch 41 shown has a structure similar to the push-button switch of a ballpoint pen. Specifically, the inner wall of the housing 411 is provided with a first guide groove 4111 and a second guide groove 4112 that are alternately arranged in the circumferential direction. The second guide groove 4112 is shorter than the first guide groove 4111, and the movable ejector rod 412 is slidably arranged along the axial direction of the housing 411. The end portions of the movable ejector rod 412 and the lock core 413 facing each other are respectively provided with a first serrated surface 4120 and a second serrated surface 4130, and a first guiding portion 4131 is provided on the circumference of the lock core 413. During the process of pressing the handle 30, the first serrated surface 4120 of the movable ejector rod 412 slides along the second serrated surface 4130, driving the lock core 413 to rotate, so that the first guiding portion 4131 can selectively slide into different first guide grooves 4111 and second guide grooves 4112 after the thrust of the movable ejector rod 412 is removed. During the operation of the self-locking switch 41, the movable ejector rod 412 is always limited in the circumferential direction of the housing 411 and can only move up and down along the axial direction of the housing 411. The lock core 413 can move up and down relative to the axial direction of the housing 411 under the thrust of the movable ejector rod 412, and can also rotate circumferentially within the housing 411 under the guidance of the first serrated surface 4120 of the movable ejector rod 412 and the thrust of the second elastic member 414, so as to selectively slide into the first guide groove 4111 and the second guide groove 4112. When the lock core 413 slides into the first guide groove 4111, the lock core 413 can move to the upper first locking position. When the lock core 413 slides into the second guide groove 4112, the lock core 413 can move to the lower second locking position.

[0064] Specifically, when it is necessary to shift gears by switching the locking state of the locking assembly 40, for example, when it is necessary to shift fromFigure 4 , Figure 6 from the low gear of Figure 3 to Figure 5 the high gear, the user can apply force to the top of the handle 30 to press the movable ejector rod 412 of the locking component 40, so that the movable ejector rod 412 and the lock core 413 approach each other, compressing the first elastic member 42. When the first elastic member 42 is compressed to a certain extent and can no longer be compressed, the movable ejector rod 412, the first elastic member 42, and the lock core 413 move downward synchronously until the lock core 413 disengages from the first guide groove 4111 of the housing 411. The housing 411 no longer circumferentially limits the lock core 413. The movable ejector rod 412 continues to move downward, compressing the second elastic member 414. Under the guidance of the first serrated surface 4120 at the bottom end of the movable ejector rod 412, the lock core 413 is driven to generate a circumferential movement (such as Figure 8 the w direction shown in

[0065] Similarly, when it is necessary to switch from Figure 4 to Figure 6 the low gear of Figure 3 to Figure 5 the high gear, the user only needs to apply force to the top of the handle 30 again to press the movable ejector rod 412 of the locking component 40. After the lock core 413 disengages from the second guide groove 4112, the housing 411 no longer circumferentially limits the lock core 413. The movable ejector rod 412 continues to move downward, compressing the second elastic member 414. Under the guidance of the first serrated surface 4120 at the bottom end of the movable ejector rod 412, the lock core 413 is driven to generate a circumferential movement (such as Figure 8in the w direction shown, and slide the second serrated surface 4130 into one of the teeth of the first serrated surface 4120 to achieve meshing and stop rotating. At this time, the first guiding portion 4131 on the circumference of the lock core 413 just rotates from below the second guiding groove 4112 to below the first guiding groove 4111 and aligns with the first guiding groove 4111. When the user releases the pressing force, under the thrust of the second elastic member 414, the first guiding portion 4131 slides along the first guiding groove 4111 and compresses the first elastic member 42, pushing the movable ejector rod 412 to the extreme position at the uppermost part of the first guiding groove 4111. The lock core 413 is then in the first locked position, and the lock core 413 is circumferentially limited by the housing 411 again and stops rotating. At this time, the movable ejector rod 412 has the maximum elongation amount.

[0066] In one embodiment, the movable ejector rod 412 includes a plurality of second guiding portions 4121 arranged circumferentially. The inner wall of the housing 411 is further provided with a third guiding groove 4113 communicating with the end of the second guiding groove 4112 facing away from the suction cup 20. The depth of the third guiding groove 4113 is less than that of the second guiding groove 4112, that is, the outer diameter of the third guiding groove 4113 is greater than the outer diameter of the second guiding portion 4121. A step portion is formed between the second guiding groove 4112 and the third guiding groove 4113. The first guiding portion 4131 can abut against the end of the third guiding groove 4113 when sliding into the second guiding groove 4112. Each of the first guiding grooves 4111 and the third guiding grooves 4113 is respectively provided with a second guiding portion 4121, and the second guiding portion 4121 is slidably arranged in the corresponding first guiding groove 4111 and the second guiding groove 4112.

[0067] That is, the circumferential limit of the movable ejector rod 412 can also be realized by the first guiding groove 4111 and the second guiding groove 4112, eliminating the design of a special movable guide rail for the movable ejector rod 412 and making full use of the internal space of the product.

[0068] As Figure 8 shown, a rib 4114 is formed between adjacent first guiding grooves 4111 and second guiding grooves 4112, and the end surface of the rib 4114 is an inclined surface D. The inclined surface D can guide the circumferential rotation of the first guiding portion 4131 when the first guiding portion 4131 slides out of the corresponding first guiding groove 4111 or second guiding groove 4112 during the rotation of the lock core 413, improving the smoothness and accuracy of the rotation of the lock core 413.

[0069] The lock core 413 may further include a limiting post 4132. The movable ejector rod 412 includes a hollow cylindrical body portion 4122. The limiting post 4132 is movably inserted into the cylindrical body portion 4122, and a limiting portion 415 is provided at the free end of the limiting post 4132 and is located inside the cylindrical body portion 4122 to limit the stroke of the cylindrical body portion 4122 moving away from the limiting post 4132.

[0070] By passing the limit post 4132 through the lower part of the movable ejector rod 412 and into the cylindrical part 4122, and fixing it at the end of the limit post 4132 by using the limiting part 415, the maximum movement distance of the movable ejector rod 412 relative to the lock core 413 can be restricted. As Figure 9 shown, specifically, a limit flange 4123 can be provided on the inner wall of the cylindrical part 4122. After the limit post 4132 passes through the flange 4123, the limiting part 415 is used to connect the limit post 4132, so that the limiting part 415 cannot cross the limit flange 4123, preventing the limit post 4132 from disengaging from the cylindrical part 4122.

[0071] In addition, the locking assembly 40 may further include an upper connecting member 43, a lower connecting member 44 and a locking member 45. The upper connecting member 43 connects the movable ejector rod 412 and the handle 30 together. The lower connecting member 44 can connect the housing 411 and the suction cup 20 together. Specifically, after the locking member 45 passes through the bottom of the suction cup 20, it can be connected to the lower connecting member 44, thereby realizing the relative fixation of the suction cup 20 and the locking assembly 40. Exemplarily, the lower end of the upper connecting member 43 is in a cylindrical shape, and the movable ejector rod 412 is sleeved therein and can move synchronously with the movable ejector rod 412 within the housing 411. The upper end portion of the lower connecting member 44 can also be in a cylindrical shape, and the housing 411 is sleeved therein. The lower connecting member 44 and the housing 411 enclose a closed space, protecting the self-locking switch 41, the first elastic member 42, etc. therein, which can prevent moisture and the like from entering and affecting the service life.

[0072] The above are only specific embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A milk suction component of a manual breast pump, characterized in that, Comprising: A breast pump main body (10), the breast pump main body (10) having a first interface end (101) and a second interface end (102) that communicate with each other, and the second interface end (102) being used for communicating with a milk storage container (1); A suction cup (20), sealed to the first interface end (101); A handle (30), one end of the handle (30) being rotatably provided on the breast pump main body (10); A locking assembly (40), the locking assembly (40) being connected between an intermediate portion of the handle (30) and the suction cup (20) with an adjustable length and having at least two locking states with different lengths.

2. The milk suction assembly of the manual breast pump according to claim 1, wherein Open slots (31) are respectively formed on both sides of the handle (30) in the width direction, and the breast pump main body (10) includes a rotating shaft portion (11) provided on one side of the first interface end (101), and both ends of the rotating shaft portion (11) are respectively rotatably clamped in the corresponding open slots (31).

3. The milk suction assembly of the manual breast pump according to claim 1, wherein The suction cup (20) is in a bowl shape and is embedded in the first interface end (101); one end of the locking assembly (40) is connected to the bottom of the suction cup (20).

4. The milk suction assembly of the manual breast pump according to claim 1, wherein The breast pump main body (10) further includes a duckbill valve (K), a milk collecting pipe (102B) is provided in the second interface end (102), and the duckbill valve (K) is connected to the end of the milk collecting pipe (102B).

5. The milk suction assembly of the manual breast pump according to any one of claims 1 to 4, characterized in that The locking assembly (40) includes a self-locking switch (41) and a first elastic member (42), and the self-locking switch (41) includes a housing (411) and a movable ejector rod (412), a lock core (413), and a second elastic member (414) provided in the housing (411); One end of the movable ejector rod (412) is connected to the handle (30), the lock core (413) is axially movably connected to the other end of the movable ejector rod (412) relative to the movable ejector rod (412), the lock core (413) has a limiting portion (415) for limiting the stroke of the movable ejector rod (412), and the first elastic member (42) is elastically compressed between the movable ejector rod (412) and the lock core (413); The second elastic member (414) is used for pushing the lock core (413) towards the movable ejector rod (412), the lock core (413) has a first locking position and a second locking position, and the second locking position is located on a side of the first locking position close to the suction cup (20); At the first locking position, the second elastic member (414) pushes the lock core (413) to compress the first elastic member (42), and the movable ejector rod (412) is abutted against the housing (411); At the second locking position, the second elastic member (414) abuts the lock core (413) against the housing (411), and the first elastic member (42) pushes the movable ejector rod (412) to abut against the limiting portion (415).

6. The milk suction assembly of the manual breast pump according to claim 5, wherein, The inner wall of the housing (411) is provided with first guide grooves (4111) and second guide grooves (4112) which are alternately arranged in the circumferential direction. The second guide grooves (4112) are shorter than the first guide grooves (4111). The movable ejector rod (412) is slidably arranged along the axial direction of the housing (411). The end parts of the movable ejector rod (412) and the lock core (413) facing each other are respectively provided with a first serrated surface (4120) and a second serrated surface (4130). A first guiding part (4131) is arranged on the circumference of the lock core (413). During the process of pressing the handle (30), the first serrated surface (4120) of the movable ejector rod (412) slides along the second serrated surface (4130), and the lock core (413) is driven to rotate, so that after the thrust of the movable ejector rod (412) is removed, the first guiding part (4131) can selectively slide into different first guide grooves (4111) and second guide grooves (4112).

7. The milk suction assembly of the manual breast pump according to claim 6, characterized in that, The movable ejector rod (412) includes a plurality of second guiding parts (4121) arranged in the circumferential direction. A third guide groove (4113) communicating with the end of the second guide groove (4112) facing away from the suction cup (20) is further formed in the inner wall of the housing (411). The depth of the third guide groove (4113) is less than that of the second guide groove (4112). The first guiding part (4131) can abut against the end of the third guide groove (4113) when sliding into the second guide groove (4112). Each of the first guide grooves (4111) and the third guide grooves (4113) is respectively provided with a second guiding part (4121). The second guiding part (4121) is slidably arranged in the corresponding first guide groove (4111) and second guide groove (4112).

8. The milk suction assembly of the manual breast pump according to claim 6, characterized in that, A rib (4114) is formed between adjacent first guide grooves (4111) and second guide grooves (4112). The end face of the rib (4114) is an inclined surface (D).

9. The milk suction assembly of the manual breast pump according to claim 5, wherein The lock core (413) includes a limiting post (4132). The movable ejector rod (412) includes a hollow cylindrical part (4122). The limiting post (4132) movably penetrates through the cylindrical part (4122), and a limiting part (415) is arranged at the free end of the limiting post (4132) and is located inside the cylindrical part (4122) to limit the stroke of the cylindrical part (4122) moving away from the limiting post (4132).

10. A manual breast pump, characterized in that, It includes a milk storage container (1) and the milk suction assembly according to any one of claims 1 to 9. The milk storage container (1) is communicated with the milk suction assembly to collect the milk sucked by the milk suction assembly.

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