Manual breast pump and breast milk extraction assembly therefor

Abstract

A manual breast pump and a breast milk extraction assembly therefor. The breast milk extraction assembly comprises: a breast milk extraction main body, provided with a first connection port end and a second connection port end which are communicated with each other, the second connection port end being communicated with a breast milk storage container; a suction bowl which seals the first connection port end; a handle, one end of the handle being rotatably arranged on the breast milk extraction main body; and a locking assembly, the locking assembly being length-adjustably connected between the middle portion of the handle and the suction bowl, and having at least two states of being locked at different lengths. The locking assembly can be locked at different lengths during working, and is therefore length-adjustable when connected between the handle and the suction bowl, so that the breast pump has different gears. A user can adjust the gear of the breast pump according to actual requirements, to adjust the suction force of the breast pump, thereby improving the use experience of the breast pump.

Description

Manual breast pump and breast pumping assembly thereof

[0001] Related applications

[0002] The present application claims priority to the Chinese patent application No. 202421441379.5, filed on June 21, 2024, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of maternal and child products, in particular to a manual breast pump and a breast pumping assembly thereof. BACKGROUND

[0004] A breast pump is an instrument for postpartum use by pregnant women. When it is inconvenient to feed a baby, a lactating woman can use a breast pump to suck out the 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 the lactating woman. Therefore, the breast pump is widely welcomed by the market.

[0005] The manual breast pump on the market mainly includes a handle, a negative pressure suction bowl and a milk bottle. A user controls the deformation of the suction bowl by repeatedly pressing the handle manually to generate a vacuum suction force. However, the vacuum suction force of this kind of manual breast pump is always constant. If the suction force is too large, it can cause discomfort of the breast. If the suction force 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.

[0006] Practical new type content

[0007] In view of the deficiencies of the prior art, the present application provides a manual breast pump and a breast pumping assembly thereof. A user can easily operate the manual breast pump to quickly adjust the suction force gear, meet the needs of different users and improve the use experience of the manual breast pump.

[0008] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0009] A breast pumping assembly of a manual breast pump, comprising:

[0010] A breast pump body having a first interface end and a second interface end in communication with each other, the second interface end being used to communicate with a milk storage container;

[0011] A suction disc sealed to the first interface end;

[0012] A handle having one end rotatably arranged on the breast pump body;

[0013] A locking assembly adjustably connected between the middle portion of the handle and the suction disc and having at least two locking states with different lengths.

[0014] As one of the embodiments, two sides of the handle in the width direction are respectively provided with an open slot, the breast pump body comprises a rotating shaft part arranged at one side of the first interface end, and two ends of the rotating shaft part are respectively rotatably clamped in the corresponding open slot.

[0015] As one of the embodiments, the suction disc 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 disc.

[0016] As one of the embodiments, the breast pump body further comprises a duckbill valve, a milk collection pipe is arranged in the second interface end, and the duckbill valve is connected to the end of the milk collection pipe.

[0017] As one of the embodiments, the locking assembly comprises a self-locking switch and a first elastic member, the self-locking switch comprises a housing, a movable top rod, a lock core and a second elastic member arranged in the housing;

[0018] One end of the movable top rod is connected to the handle, the lock core is movably connected to the other end of the movable top rod in the axial direction of the movable top rod, the lock core has a limiting part limiting the stroke of the movable top rod, and the first elastic member is elastically compressed between the movable top rod and the lock core;

[0019] The second elastic member is used for pushing the lock core towards the movable top rod, the lock core has a first locking position and a second locking position, and the second locking position is located on the side of the first locking position close to the suction disc;

[0020] In the first locking position, the second elastic member pushes the lock core to compress the first elastic member, and the movable top rod is abutted against the housing;

[0021] In the second locking position, the second elastic member abuts the lock core against the housing, and the first elastic member pushes the movable top rod to abut against the limiting part.

[0022] As one of the embodiments, 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, and the movable top rod is slidably arranged in the axial direction of the housing;

[0023] The ends of the movable top rod and the lock core facing each other are respectively provided with a first sawtooth surface and a second sawtooth surface, and the lock core is provided with a first guide part in the circumferential direction;

[0024] During the process that the handle is pressed, the first serrated surface of the movable jacking rod slides along the second serrated surface, the lock core is driven to rotate, so that the first guide part can selectively slide into different first guide grooves and second guide grooves after the pushing force of the movable jacking rod is removed.

[0025] As one of the embodiments, the movable jacking rod comprises a plurality of second guide parts arranged in the circumferential direction, and the inner wall of the shell is further provided with a third guide groove communicating with the end of the second guide groove away from the suction disc, the depth of the third guide groove is less than that of the second guide groove, and the first guide part can abut against the end of the third guide groove when sliding into the second guide groove.

[0026] Each of the first guide grooves and the third guide groove is respectively provided with one of the second guide parts, and the second guide part is slidably arranged in the corresponding first guide groove or second guide groove.

[0027] As one of the embodiments, a rib is formed between the adjacent first guide groove and second guide groove, and the end surface of the rib is an inclined surface.

[0028] As one of the embodiments, the lock core comprises a limiting column, the movable jacking rod comprises a hollow barrel part, the limiting column is movably arranged in the barrel part, and the limiting part is arranged at the free end of the limiting column and located in the barrel part to limit the stroke of the barrel part moving away from the limiting column.

[0029] Another purpose of the present application is to provide a manual breast pump, which comprises a milk storage container and any one of the above-mentioned breast pumping assemblies, and the milk storage container is in communication with the breast pumping assembly to collect the milk pumped by the breast pumping assembly.

[0030] The locking assembly of the present application can be locked at different lengths during operation, so that the connection length between the handle and the suction disc is adjustable, thereby making the breast pump have different gears, and the user can adjust the gear of the breast pump according to the actual needs, so as to adjust the suction force of the breast pump, and improve the use experience of the breast pump. BRIEF DESCRIPTION OF DRAWINGS

[0031] FIG. 1 shows a structural schematic view of a manual breast pump according to an embodiment of the present application;

[0032] FIG. 2 shows a structural exploded schematic view of a manual breast pump according to an embodiment of the present application;

[0033] FIG. 3 shows a sectional view of a manual breast pump according to an embodiment of the present application in a first use state;

[0034] FIG. 4 shows a sectional view of a manual breast pump according to an embodiment of the present application in a second use state;

[0035] Figure 5 shows a cross-sectional view of a locking assembly according to an embodiment of the present application in a first state of use;

[0036] Figure 6 shows a cross-sectional view of a locking assembly according to an embodiment of the present application in a second state of use;

[0037] Figure 7 shows an exploded view of a locking assembly according to an embodiment of the present application;

[0038] Figure 8 shows a schematic view of the cooperation of the components of a self-locking switch according to an embodiment of the present application;

[0039] Figure 9 shows a cross-sectional view of a locking assembly according to an embodiment of the present application in an exploded state.

[0040] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0041] In the present application, the terms "provided with", "connected with" and "connected" should be interpreted broadly. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] The terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0044] In addition, the above-mentioned partial terms can be used to represent other meanings in addition to the orientation or positional relationship, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances.

[0045] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0046] Fig. 1 shows a schematic structural view of a manual breast pump according to an embodiment of the present application; Fig. 2 shows a schematic exploded view of a manual breast pump according to an embodiment of the present application.

[0047] Referring to Figs. 1 and 2, the present application provides a manual breast pump, which mainly comprises a milk storage container 1 and a breast pump assembly 2. The breast pump assembly 2 is operable by a user to suck milk, and the milk storage container 1 is in communication with the breast pump assembly 2 to collect the milk sucked by the breast pump assembly 2. For example, the milk storage container 1 can be a feeding bottle or a feeding bowl mounted on the breast pump assembly 2, or a feeding bottle or a feeding bowl integrally arranged on a breast pump shell, or a container in communication with the breast pump assembly 2 through a pipe or the like.

[0048] Specifically, the breast pump assembly 2 mainly comprises a breast pump body 10, a suction disc 20, a handle 30, a locking assembly 40, and a breast cup 50. The breast pump body 10 has a first interface end 101, a second interface end 102, and a third interface end 103 in communication with each other. The first interface end 101 is used to communicate with the suction disc 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 cup 50. The suction disc 20 is sealed to the first interface end 101, one end of the handle 30 is rotatably arranged on the breast pump body 10, and the locking assembly 40 is adjustably connected between the middle portion of the handle 30 and the suction disc 20 and has at least two locking states with different lengths.

[0049] When using the breast pump, the user rotates the handle 30 around the breast pump body 10 to drive the suction disc 20 to deform through the locking assembly 40, so that the negative pressure generated by the suction disc 20 acts on the breast through the breast cup 50, thereby sucking out the milk. The milk flows from the third interface end 103 of the breast pump body 10 to the second interface end 102 of the breast pump body 10 through the breast cup 50, and then flows out to be collected into the milk storage container 1.

[0050] Fig. 3 shows a cross-sectional view of a manual breast pump according to an embodiment of the present application in a high gear state; Fig. 4 shows a cross-sectional view of a manual breast pump according to an embodiment of the present application in a low gear state.

[0051] As shown in FIG. 3, when the locking assembly 40 is in the short length locking state, the rotatable angle range of the handle 30 is increased, when the user presses the free end of the handle 30 to the limit position close to the breast pump body 10, the breast pump body 10 can rotate a larger angle, the deformation of the suction disc 20 is larger, therefore, the negative pressure acting on the breast of the breast cup 50 is larger, more milk can be sucked at one time, and the human body also bears a larger suction force; as shown in FIG. 4, when the locking assembly 40 is switched to the long length locking state, the length of the locking assembly 40 is longer, in the initial state, the free end of the handle 30 is closer to the breast pump body 10 than the case in FIG. 3, when the user presses the free end of the handle 30 to the limit position close to the breast pump body 10, the rotatable angle range of the breast pump body 10 is smaller, the deformation of the suction disc 20 is correspondingly smaller, therefore, the negative pressure acting on the breast of the breast cup 50 is smaller, the milk that can be sucked at one time is less, and the human body also bears a smaller suction force.

[0052] Therefore, in the process of using the breast pump, by adjusting the locking assembly 40 and locking it at different lengths, the length of the connection between the handle 30 and the suction disc 20 can be adjusted, so as to adjust the maximum deformation amount of the suction disc 20, so that the breast pump has different gears, the user can adjust the gear of the breast pump according to the actual needs, so as to adjust the suction force of the breast pump, meet the needs of different users, and improve the use experience of the breast pump.

[0053] In one embodiment, the two sides of the handle 30 in the width direction are respectively provided with open grooves 31, the opening direction of the open grooves 31 is towards the breast pump body 10, the breast pump body 10 includes a rotating shaft part 11 arranged on one side of the first interface end 101, and the two ends of the rotating shaft part 11 are respectively rotatably clamped in the corresponding open grooves 31.

[0054] When installing the handle 30, only one end of the handle 30 is rotatably connected to the locking assembly 40, and the open grooves 31 of the middle part of the handle 30 are aligned with the rotating shaft part 11, and the rotating shaft part 11 is clamped along the open grooves 31, so that the handle 30 can be used by operating the free end based on the principle of lever.

[0055] Exemplarily, the suction disc 20 is in a bowl shape and is embedded in the first interface end 101, the first interface end 101 accommodates the bottom and the side of the suction disc 20, and the edge of the suction disc 20 is sleeved on the outer edge of the first interface end 101, and the two are sealed together. One end of the locking assembly 40 is connected to the bottom of the suction disc 20, and the other end is connected to the handle 30, and the rotation of the handle 30 drives the suction disc 20 to deform.

[0056] At the second interface end 102, the breast pump body 10 is connected with the milk storage container 1. The breast pump body 10 can further comprise a duckbill valve K, and the second interface end 102 is provided with a milk collection pipe 102B, and the duckbill valve K is connected to the end of the milk collection pipe 102B. The special structure of the duckbill valve K can realize the one-way flow of milk from the breast pump body 10 to the milk storage container 1, and the milk in the milk storage container 1 is difficult to flow back to the breast pump body 10 from the duckbill valve K.

[0057] It can be understood that the milk storage container 1 can be assembled with the second interface end 102 by the cooperation of the internal thread and the external thread, or can be assembled by buckling and the like.

[0058] At the third interface end 103, the breast cup 50 is detachably installed with the breast pump body 10 through the third interface end 103. It can be understood that in other embodiments, the breast cup 50 and the breast pump body 10 can also be integrally provided. The breast cup 50 mainly comprises a flange 51 and a soft rubber disc 52 connected to the end of the flange 51. The flange 51 is made of a relatively hard material, and the soft rubber disc 52 can be made of a soft material such as silica gel. The breast cup 50 is in the shape of a horn to better fit the human body.

[0059] FIG. 5 shows a cross-sectional view of a locking assembly in a first use state according to an embodiment of the present application; FIG. 6 shows a cross-sectional view of a locking assembly in a second use state according to an embodiment of the present application; and FIG. 7 shows a structural exploded view of a locking assembly according to an embodiment of the present application.

[0060] In combination with FIGS. 5-7, in one embodiment, the locking assembly 40 comprises a self-locking switch 41 and a first elastic member 42. The self-locking switch 41 comprises a housing 411, and a movable top rod 412, a lock core 413 and a second elastic member 414 arranged in the housing 411.

[0061] The one end of the movable top rod 412 is connected with the handle 30, and the lock core 413 is movably connected with the other end of the movable top rod 412 in the axial direction, and the lock core 413 has a limiting portion 415 for limiting the stroke of the movable top rod 412. The first elastic member 42 is elastically compressed between the movable top rod 412 and the lock core 413.

[0062] The second elastic member 414 is used to push the lock core 413 towards the movable top rod 412. The lock core 413 has a first locking position and a second locking position, and the second locking position is located on the side of the first locking position close to the suction disc 20. 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 greater elastic force and can compress the first elastic member 42 without external force.

[0063] As shown in FIG. 4 and FIG. 6, in the first locking position, the breast pump is in a low gear state, the second elastic member 414 pushes the lock core 413 to compress the first elastic member 42, and the movable top rod 412 abuts against the inner surface of the shell 411. In this state, the first elastic member 42 has a first compression amount, which is the maximum; the movable top rod 412 has a first elongation amount outside the shell 411, which is the longest, i.e., the length of the shell 411 and the movable top rod 412 is the longest. The force generated by the elongation of the second elastic member 414 pushes the lock core 413, the first elastic member 42, and the movable top rod 412 to the uppermost position, and all of them move to the uppermost limit position in the shell 411, so that the movable top rod 412 abuts against the uppermost limit position of the shell 411, and the lock core 413 is located in the first locking position.

[0064] As shown in FIG. 3 and FIG. 5, in the second locking position, the breast pump is in a high gear state, the second elastic member 414 abuts the lock core 413 against the second locking position below the shell 411, which is closer to the lower position (i.e., closer to the suction disc 20) than the first locking position of the lock core 413 shown in FIG. 4 and FIG. 6, and the first elastic member 42 pushes the movable top 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 minimum; the movable top rod 412 has a second elongation amount outside the shell 411, which is smaller than the first elongation amount, i.e., the length of the shell 411 and the movable top rod 412 is shorter. Since the lock core 413 is limited to the second locking position below by the shell 411, the compression amount of the second elastic member 414 increases, and the compression amount of the first elastic member 42 decreases, and the force generated by the elongation of the first elastic member 42 pushes the lock core 413 and the movable top rod 412 away, and the movable top rod 412 is pushed to the limit position held by the limiting portion 415, and the limiting portion 415 prevents the movable top rod 412 from continuing to extend, and in this state, the movable top rod 412 cannot abut against the inner surface of the shell 411.

[0065] In the 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 in the first locking position below in the high gear state of the breast pump. The first elastic member 42 pushes the movable jack 412 upward to the limit position and is pulled by the limiting portion 415, thereby ensuring the uniqueness of the position of the movable jack 412. When the user operates the handle 30, the movable jack 412 transmits the force to the lock core 413, the shell 411 and the suction disc 20 in sequence through the limiting portion 415, and drives these structures to move upward synchronously, so that the suction disc 20 is deformed to suck the milk. When the user removes the rotating force applied to the handle 30, the suction disc 20 restores the deformation, and the force is transmitted to the lock core 413, the limiting portion 415 and the movable jack 412 in sequence through the shell 411, and drives these structures to move downward synchronously, thereby driving the handle 30 to reset. In this process, the first elastic member 42, the second elastic member 414 and the limiting portion 415 cooperate to push the movable jack 412 upward and limit the movable jack 412 in the fixed position in the shell 411, thereby ensuring the uniqueness of the position of the lock core 413 and the movable jack 412 in the shell 411.

[0066] As shown in FIGS. 3-8, the self-locking switch 41 is shown as the structure of the push switch of a ballpoint pen. Specifically, the inner wall of the shell 411 is provided with first guide grooves 4111 and second guide grooves 4112 arranged alternately in the circumferential direction, the second guide grooves 4112 are shorter than the first guide grooves 4111, and the movable jack 412 is slidably arranged along the axial direction of the shell 411. The ends of the movable jack 412 and the lock core 413 facing each other are respectively provided with first sawtooth surfaces 4120 and second sawtooth surfaces 4130, and the lock core 413 is provided with a first guide portion 4131 in the circumferential direction. In the process of pressing the handle 30, the first sawtooth surface 4120 of the movable jack 412 slides along the second sawtooth surface 4130, the lock core 413 is driven to rotate, and the first guide portion 4131 can selectively slide into different first guide grooves 4111 and second guide grooves 4112 after the pushing force of the movable jack 412 is removed. In the working process of the self-locking switch 41, the movable jack 412 can only move up and down along the axial direction of the shell 411 due to the limitation of the circumferential direction of the shell 411, the lock core 413 can move up and down relative to the axial direction of the shell 411 under the pushing force of the movable jack 412, and can also rotate in the circumferential direction in the shell 411 under the guidance of the first sawtooth surface 4120 of the movable jack 412 and the pushing force of the second elastic member 414, thereby selectively sliding into the first guide grooves 4111 and the second guide grooves 4112. When the lock core 413 slides into the first guide grooves 4111, the lock core 413 can move to the first locking position above, and when the lock core 413 slides into the second guide grooves 4112, the lock core 413 can move to the second locking position below.

[0067] 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 switch from the low gear of FIGS. 4 and 6 to the high gear of FIGS. 3 and 5, the user can press down the movable top rod 412 of the locking assembly 40 by applying force to the top of the handle 30, so that the movable top rod 412 and the lock core 413 move close to each other, and the first elastic member 42 is compressed. When the first elastic member 42 is compressed to a certain extent and cannot be compressed any more, the movable top rod 412, the first elastic member 42 and the lock core 413 move downward synchronously until the lock core 413 is out of the first guide groove 4111 of the housing 411, and the housing 411 no longer limits the lock core 413 in the circumferential direction. The movable top rod 412 continues to move downward and compresses the second elastic member 414. Under the guidance of the first sawtooth surface 4120 at the bottom end of the movable top rod 412, the lock core 413 is driven to move in the circumferential direction (for example, in the direction w shown in FIG. 8), and the second sawtooth surface 4130 is slid into one of the teeth of the first sawtooth surface 4120 to achieve meshing and no longer rotate. At this time, the first guide portion 4131 in the circumferential direction of the lock core 413 is just rotated from below the first guide groove 4111 to below the second guide groove 4112, and is aligned with the second guide groove 4112. When the user releases the pressing force, under the pushing force of the second elastic member 414, the first guide portion 4131 slides along the second guide groove 4112 and moves to the uppermost limit position of the second guide groove 4112, and the lock core 413 is located in the second locking position. The lock core 413 is again limited in the circumferential direction by the housing 411 and no longer rotates. The movable top rod 412 moves away from the lock core 413 under the pushing force of the first elastic member 42, until the limiting portion 415 tightens the movable top rod 412, and the movable top rod 412 maintains the state of moving away from the lock core 413, so as to realize the constant elongation of the movable top rod 412 relative to the housing 411.

[0068] Similarly, when it is required to switch from the low gear of FIG. 4, FIG. 6 to the high gear of FIG. 3, FIG. 5, the user only needs to press the movable top rod 412 of the locking assembly 40 again by applying force to the top of the handle 30, after the lock core 413 is disengaged from the second guide groove 4112, the shell 411 no longer limits the lock core 413 in the circumferential direction, the movable top rod 412 continues to move downward, compresses the second elastic member 414, and under the guidance of the first sawtooth surface 4120 at the bottom end of the movable top rod 412, the lock core 413 is driven to move in the circumferential direction (for example, in the w direction shown in FIG. 8), and the second sawtooth surface 4130 is slid into one of the teeth of the first sawtooth surface 4120 to achieve meshing and no longer rotate. At this time, the first guide portion 4131 in the circumferential direction of the lock core 413 is just rotated from below the second guide groove 4112 to below the first guide groove 4111 and is aligned with the first guide groove 4111. When the user releases the pressing force, under the pushing force of the second elastic member 414, the first guide portion 4131 slides along the first guide groove 4111 and compresses the first elastic member 42 to push the movable top rod 412 to the limit position at the top of the first guide groove 4111, and the lock core 413 is located in the first locking position and no longer rotates due to the circumferential limitation of the shell 411. At this time, the movable top rod 412 has the maximum elongation.

[0069] In one embodiment, the movable top rod 412 includes a plurality of second guide portions 4121 arranged in the circumferential direction, and the inner wall of the shell 411 is further provided with a third guide groove 4113 communicating with one end of the second guide groove 4112 away from the suction disc 20. The depth of the third guide groove 4113 is smaller than that of the second guide groove 4112, that is, the outer diameter of the third guide groove 4113 is greater than the outer diameter of the second guide portion 4121, and a step portion is formed between the second guide groove 4112 and the third guide groove 4113. The first guide portion 4131 can abut against the end portion of the third guide groove 4113 when sliding into the second guide groove 4112. Each of the first guide groove 4111 and the third guide groove 4113 is provided with one second guide portion 4121, and the second guide portion 4121 is slidably arranged in the corresponding first guide groove 4111 and second guide groove 4112.

[0070] That is, the circumferential limitation of the movable top rod 412 can also be achieved by the first guide groove 4111 and the second guide groove 4112, which eliminates the design of a special movable guide rail for the movable top rod 412 and fully utilizes the space inside the product.

[0071] As shown in FIG. 8, a rib 4114 is formed between adjacent first guide grooves 4111 and second guide grooves 4112, and the end face of the rib 4114 is an inclined face D. The inclined face D can guide the circumferential rotation of the first guide portion 4131 and improve the smoothness and accuracy of the rotation of the lock core 413 when the first guide portion 4131 slides out of the corresponding first guide groove 4111 or second guide groove 4112 during the rotation of the lock core 413.

[0072] The lock cylinder 413 can further include a limiting post 4132, the movable top rod 412 includes a hollow cylinder portion 4122, the limiting post 4132 is movably arranged in the cylinder portion 4122, and the limiting portion 415 is arranged at the free end of the limiting post 4132 and located in the cylinder portion 4122 to limit the movement stroke of the cylinder portion 4122 away from the limiting post 4132.

[0073] By arranging the limiting post 4132 in the cylinder portion 4122 from below the movable top rod 412 and fixing the end of the limiting post 4132 by the limiting portion 415, the maximum movement distance of the movable top rod 412 relative to the lock cylinder 413 can be limited. As shown in FIG. 9, the limiting flange 4123 can be arranged on the inner wall of the cylinder portion 4122, after the limiting post 4132 passes through the flange 4123, the limiting portion 415 is connected to the limiting post 4132, so that the limiting portion 415 cannot pass through the limiting flange 4123, avoiding the limiting post 4132 from being pulled out of the cylinder portion 4122.

[0074] In addition, the locking assembly 40 can further include an upper connecting piece 43, a lower connecting piece 44 and a locking piece 45, the upper connecting piece 43 connects the movable top rod 412 and the handle 30 together, the lower connecting piece 44 can connect the shell 411 and the suction disc 20 together, and specifically, the locking piece 45 can be connected to the lower connecting piece 44 after passing through the bottom of the suction disc 20, so as to realize the relative fixation of the suction disc 20 and the locking assembly 40. Exemplarily, the lower end of the upper connecting piece 43 is in a cylindrical shape, the movable top rod 412 is sleeved therein and can move synchronously with the movable top rod 412 in the shell 411; the upper end portion of the lower connecting piece 44 can also be in a cylindrical shape, the shell 411 is sleeved therein, and the lower connecting piece 44 and the shell 411 form a closed space to protect the self-locking switch 41, the first elastic member 42 and the like, so as to avoid the entry of water vapor and the like to affect the service life.

[0075] The above is only a specific embodiment of the present application, and it should be pointed out that, for those skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, which should also be regarded as the protection range of the present application.

Claims

1. A breast pump assembly for a manual breast pump, wherein, include: The breast pump body (10) has a first interface end (101) and a second interface end (102) that are connected to each other. The second interface end (102) is used to communicate with the milk storage container (1). The suction plate (20) is sealed to the first interface end (101); A handle (30), one end of which is rotatably disposed on the breast pump body (10); A locking assembly (40) is connected in an adjustable length between the middle portion of the handle (30) and the suction disc (20), and has at least two locking states with different lengths.

2. The milk-expressing component of the manual breast pump according to claim 1, wherein, The handle (30) has opening slots (31) on both sides in the width direction. The breast pump body (10) includes a rotating shaft (11) located on one side of the first interface end (101). The two ends of the rotating shaft (11) are rotatably engaged in the corresponding opening slots (31).

3. The milk-expressing component of the manual breast pump according to claim 1, wherein, The suction plate (20) is bowl-shaped and is embedded in the first interface end (101); one end of the locking component (40) is connected to the bottom of the suction plate (20).

4. The milk-expressing component of the manual breast pump according to claim 1, wherein, The breast pump body (10) also includes a duckbill valve (K), and a milk collection tube (102B) is provided in the second interface end (102). The duckbill valve (K) is connected to the end of the milk collection tube (102B).

5. The milk-expressing component of the manual breast pump according to any one of claims 1 to 4, wherein, The locking assembly (40) includes a self-locking switch (41) and a first elastic element (42). The self-locking switch (41) includes a housing (411) and a movable top rod (412), a lock cylinder (413), and a second elastic element (414) disposed in the housing (411). One end of the movable push rod (412) is connected to the handle (30), and the lock cylinder (413) is axially movably connected to the other end of the movable push rod (412) relative to the movable push rod (412). The lock cylinder (413) has a limiting part (415) that limits the stroke of the movable push rod (412). The first elastic member (42) is elastically compressed between the movable push rod (412) and the lock cylinder (413). The second elastic element (414) is used to push the lock cylinder (413) toward the movable push rod (412). The lock cylinder (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 plate (20). In the first locked position, the second elastic element (414) pushes the lock cylinder (413) to compress the first elastic element (42), thereby abutting the movable push rod (412) against the housing (411); In the second locked position, the second elastic member (414) abuts the lock cylinder (413) against the housing (411), and the first elastic member (42) pushes the movable push rod (412) to abut against the limiting part (415).

6. The milk-expressing component of the manual breast pump according to claim 5, wherein, The inner wall of the housing (411) is provided with a first guide groove (4111) and a second guide groove (4112) arranged alternately in the circumferential direction. The second guide groove (4112) is shorter than the first guide groove (4111). The movable push rod (412) is slidably arranged along the axial direction of the housing (411). The movable top rod (412) and the lock cylinder (413) are respectively provided with a first serrated surface (4120) and a second serrated surface (4130) at their ends facing each other, and the lock cylinder (413) is provided with a first guide part (4131) in the circumferential direction; During the pressing of the handle (30), the first serrated surface (4120) of the movable push rod (412) slides along the second serrated surface (4130), and the lock cylinder (413) is driven to rotate, so that the first guide part (4131) can selectively slide into different first guide grooves (4111) and second guide grooves (4112) after the thrust of the movable push rod (412) is removed.

7. The milk-expressing component of the manual breast pump according to claim 6, wherein, The movable top rod (412) includes a plurality of second guide portions (4121) arranged circumferentially. The inner wall of the housing (411) is also provided with a third guide groove (4113) that connects the second guide groove (4112) to one end opposite to the suction plate (20). The depth of the third guide groove (4113) is less than that of the second guide groove (4112). The first guide portion (4131) can abut against the end of the third guide groove (4113) when it slides into the second guide groove (4112). Each of the first guide groove (4111) and the third guide groove (4113) is provided with a second guide part (4121), and the second guide part (4121) is slidably disposed in the corresponding first guide groove (4111) and second guide groove (4112).

8. The milk-expressing component of the manual breast pump according to claim 6, wherein, A rib (4114) is formed between adjacent first guide grooves (4111) and second guide grooves (4112), and the end face of the rib (4114) is inclined (D).

9. The milk-expressing component of the manual breast pump according to claim 5, wherein, The lock cylinder (413) includes a limiting post (4132), and the movable push rod (412) includes a hollow cylindrical part (4122). The limiting post (4132) is movably inserted into the cylindrical part (4122), and the limiting part (415) is provided at the free end of the limiting post (4132) and located inside the cylindrical part (4122) to limit the travel of the cylindrical part (4122) away from the limiting post (4132).

10. A manual breast pump, wherein, It includes a milk storage container (1) and a milk suction assembly as described in any one of claims 1 to 9, wherein the milk storage container (1) is in communication with the milk suction assembly to collect the milk sucked up by the milk suction assembly.

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