Hand-holding-free breast pump

Abstract

The utility model discloses a hand-holding-free breast pump and relates to the technical field of breast pumps, the hand-holding-free breast pump is provided with a negative pressure diaphragm and a breast pumping channel, the hand-holding-free breast pump comprises a rocker component and a locking assembly, and the rocker component is used for driving the negative pressure diaphragm to move so that negative pressure can be generated in the breast pumping channel; the locking assembly is used for locking the position of the rocker component so that the negative pressure of the milk sucking channel can be kept or released. The locking assembly is arranged on the rocker component. According to the technical scheme provided by the utility model, the problem that the negative pressure for sucking milk is lost when the pressing force on the rocker is released by the hand of the existing manual breast pump can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a breast pump technical field, especially in a kind of hand-free breast pump. BACKGROUND

[0002] The working principle of existing manual breast pump is mainly realized by repeatedly actuating rocker by artificial, when working, actuating rocker drives diaphragm movement to generate negative pressure, and rocker is released, diaphragm rebound drives rocker to reset, and negative pressure disappears, so that the frequency of negative pressure breast milk work is realized by repeatedly actuating rocker.

[0003] Long-time repeated manual operation can cause hand sore, and it is inconvenient to exchange left and right when breastfeeding and breast milk at the same time, and the breast milk work of the whole product is realized by rocker, negative pressure diaphragm, breast milk passage and other core components, but the work of breast milk needs to keep rocker repeatedly actuated to continue, and the breast milk negative pressure will be lost as long as the hand releases the pressing force of rocker, so the experience of user to product use is reduced. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a hand-free breast pump, to solve the problems that existing manual breast pump can cause user hand sore in long-time repeated manual operation process, and the breast milk negative pressure will be lost as long as the hand releases the pressing force of rocker.

[0005] To achieve the above-mentioned purpose, the hand-free breast pump provided by the utility model has negative pressure diaphragm and breast milk passage, and the hand-free breast pump includes rocker component and locking assembly, the rocker component is used to drive the movement of the negative pressure diaphragm to generate negative pressure in the breast milk passage, the locking assembly is used to lock the position of the rocker component to keep or release the negative pressure of the breast milk passage, and the locking assembly is arranged on the rocker component.

[0006] In an embodiment, the locking assembly includes locking piece and cooperating piece, the locking piece is detachably connected with the cooperating piece, and the locking piece can be locked or separated with the cooperating piece to keep or release the negative pressure of the breast milk passage.

[0007] In an embodiment, the locking piece is provided with at least one locking part, and the cooperating piece is provided with multiple cooperating parts, or the locking piece is provided with multiple locking parts, and the cooperating piece is provided with at least one cooperating part, and at least one locking part can be locked with any cooperating part to change the negative pressure in the breast milk passage.

[0008] In an embodiment, the hands-free breast pump comprises a main body structure, the rocker member is rotatably connected to the main body structure, the locking member is connected to the main body structure, the matching member is connected to the rocker member, and the locking member can be clamped or separated from the matching member when the rocker member rotates relative to the main body structure.

[0009] In an embodiment, the locking member and the main body structure enclose a locking groove, the matching member has a matching section close to the locking member, and the matching section can abut against the inner wall of the locking groove to make the rocker member in a locked state.

[0010] In an embodiment, the side wall of the locking groove forms a limiting groove, and the rocker member is configured to move along the extension direction of the limiting groove relative to the main body structure to drive the matching section to move along the locking groove and be limited in the limiting groove.

[0011] In an embodiment, one end of the locking member is provided with a clearance opening, the clearance opening communicates the limiting groove with the outside, the matching member has a connecting section close to the rocker member, the connecting section is connected to the matching section, the connecting section can pass through the clearance opening, and the end of the locking member close to the clearance opening forms an anti-disengagement platform.

[0012] In an embodiment, one of the locking member and the matching member is a magnetic member, and the other one is a magnet.

[0013] In an embodiment, the rocker member comprises a rocker and a connecting rod, the connecting rod is connected to the negative pressure diaphragm, one end of the rocker close to the connecting rod is provided with a connecting hole, and the connecting rod is detachably connected to the connecting hole.

[0014] In an embodiment, the connecting rod has a plurality of pressure regulating bosses arranged at intervals, each of the pressure regulating bosses is connected to the connecting hole to make the breast milk suction channel generate different negative pressures.

[0015] The utility model discloses a technical scheme of a hands-free breast pump, which includes a rocker component, a negative pressure diaphragm, a breast suction channel and a locking assembly. The rocker component drives the negative pressure diaphragm to move through mechanical connection. When the rocker component is actuated, the negative pressure diaphragm is stretched to form negative pressure in the breast suction channel, thereby realizing the breast pumping function. The locking assembly is installed on the rocker component and can fix the rocker component at a specific position through buckles, ratchets or other locking mechanisms, so that the negative pressure is maintained. When the negative pressure needs to be released, the user can release the locking state through unlocking operation, and the rocker component resets, and the negative pressure disappears accordingly. This design realizes the organic combination of manual operation and hands-free function, is simple to operate and compact in structure. The locking assembly is used to maintain the negative pressure continuously, so that the user does not need to continuously manually operate the rocker, and stable breast pumping effect can be realized, thereby effectively reducing hand fatigue. At the same time, the hands-free function enables the user to free both hands for other activities, such as taking care of the baby or handling daily affairs, during the breast pumping process, thereby greatly improving the convenience and flexibility of use. This design not only solves the problem of inconvenient operation of the traditional manual breast pump, but also provides a more comfortable and free use experience for lactating mothers, and has high practicability and market value. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0017] Figure 1 The structure schematic view of one embodiment of the hands-free breast pump provided by the utility model is shown in the figure.

[0018] Figure 2 The sectional view schematic view of one embodiment of the hands-free breast pump provided by the utility model is shown in the figure.

[0019] Figure 3 The structure schematic view of one embodiment of the hands-free breast pump provided by the utility model is shown in the figure. Figure 2 The local enlarged view at A.

[0020] Figure 4 The structure schematic view of one embodiment of the locking piece provided by the utility model is shown in the figure.

[0021] Figure 5 The structure schematic view of one embodiment of the cooperating piece provided by the utility model is shown in the figure.

[0022] Explanation of reference numerals:

[0023] 100. A hands-free breast pump; 1. Main body structure; 1a. Breast milk suction channel; 2. Negative pressure diaphragm; 3. Rocker component; 31. Rocker; 32. Connecting rod; 4. Locking assembly; 41. Locking piece; 42. Mating piece; 41a. Locking groove; 421. Mating section; 41b. Limiting groove; 41c. Relief opening; 422. Connecting section; 411. Anti-dropping platform; 31a. Connecting hole; 321. Pressure regulating boss.

[0024] The realization, functional features and advantages of the utility model will be further described in combination with embodiments with reference to the drawings. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0027] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one feature. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B simultaneously meet the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0028] The utility model provides a hands-free breast pump 100.

[0029] Please refer to Figure 1 and Figure 2In an embodiment of the utility model, the hands-free breast pump has a negative pressure diaphragm and a breast suction channel, the hands-free breast pump comprises a rocker component and a locking assembly, the rocker component is used for driving the negative pressure diaphragm to move to generate negative pressure in the breast suction channel, and the locking assembly is used for locking the position of the rocker component to keep or release the negative pressure of the breast suction channel, and the locking assembly is arranged on the rocker component.

[0030] In the embodiment, the utility model discloses a hands-free breast pump, which comprises a rocker component, a negative pressure diaphragm, a breast suction channel and a locking assembly. The rocker component drives the negative pressure diaphragm to move through mechanical connection, when the rocker component is actuated, the negative pressure diaphragm is stretched to form negative pressure in the breast suction channel, thereby realizing the breast pumping function. The locking assembly is installed on the rocker component, and through buckle, ratchet or other locking mechanism, the rocker component can be fixed at a specific position to keep the negative pressure. When the negative pressure needs to be released, the user can release the locking state through unlocking operation, the rocker component resets, and the negative pressure disappears. This design realizes the organic combination of manual operation and hands-free function, is simple to operate and compact in structure. Through the locking assembly, the negative pressure is kept continuously, the user does not need to continuously manually operate the rocker, and stable breast pumping effect can be realized, so that hand fatigue is effectively reduced. Meanwhile, the hands-free function enables the user to free both hands for other activities during breast pumping, such as taking care of the baby or handling daily affairs, greatly improving the convenience and flexibility of use. This design not only solves the problem of inconvenient operation of the traditional manual breast pump, but also provides a more comfortable and free use experience for lactating mothers, and has high practicability and market value.

[0031] In an embodiment of the utility model, please refer to Figure 1 And Figure 2 The locking assembly 4 comprises a locking piece 41 and a matching piece 42, the locking piece 41 and the matching piece 42 are detachably connected, the locking piece 41 can be locked or separated with the matching piece 42 to keep or release the negative pressure of the breast suction channel 1a.

[0032] In an embodiment, the locking assembly 4 is a key structure of the hands-free breast pump 100, which includes a locking piece 41 and a cooperating piece 42 connected by a detachable connection method such as buckling, magnetic attraction, or bolts. The locking piece 41 and the cooperating piece 42 are arranged at different positions of the hands-free breast pump 100, and the locking piece 41 can be locked or separated from the cooperating piece 42. When the locking piece 41 is combined with the cooperating piece 42, the rocker component 3 is fixed at a specific position, and the negative pressure diaphragm 2 remains in a compressed state, so that the negative pressure in the breast pumping channel la is continuously maintained; when the negative pressure needs to be released, the user can manually separate the locking piece 41 and the cooperating piece 42, and the rocker component 3 is reset, and the negative pressure disappears accordingly. Through the locking and separating mechanism of the locking piece 41 and the cooperating piece 42, the hands-free breast pump 100 realizes the functions of continuous maintenance and release of negative pressure. This design not only solves the problem of continuous manual operation of traditional manual breast pumps, but also significantly improves the convenience and comfort of use. The user can free up both hands to perform other activities during the breast pumping process, such as taking care of the baby or handling daily affairs, greatly improving the user experience.

[0033] In an embodiment of the present utility model, please refer to Figure 1 The locking piece 41 is provided with at least one locking portion, and the cooperating piece 42 is provided with a plurality of cooperating portions; or the locking piece 41 is provided with a plurality of locking portions, and the cooperating piece 42 is provided with at least one cooperating portion; at least one locking portion can be locked with any cooperating portion to change the negative pressure in the breast pumping channel la.

[0034] In an embodiment, the locking piece 41 and the cooperating piece 42 of the hands-free breast pump 100 realize the limiting of the rocker 31 component 3 at different heights through mutual cooperation, thereby adjusting the negative pressure in the breast pumping channel la. Specifically, the locking piece 41 is provided with at least one locking portion, and the cooperating piece 42 is provided with a plurality of cooperating portions; or the locking piece 41 is provided with a plurality of locking portions, and the cooperating piece 42 is provided with at least one cooperating portion. These locking portions and cooperating portions are arranged along the movement direction of the rocker 31 component 3. When the rocker 31 component 3 moves relative to the main body structure 1, at least one locking portion can be locked or separated from any cooperating portion. For example, the locking portion can be designed as a movable buckle, and the cooperating portion is a plurality of grooves arranged along the movement direction of the rocker 31. By adjusting the position of the rocker 31, the buckle can be selectively locked with different grooves, thereby fixing the rocker 31 at different heights to realize different degrees of negative pressure maintenance or release. This design allows the user to adjust the negative pressure intensity according to their own needs while maintaining the simplicity of operation.

[0035] In an embodiment of the present utility model, please refer to Figure 1The hands-free breast pump 100 comprises a main body structure 1, a rocker component 3 is rotationally connected with the main body structure 1, a locking piece 41 is connected with the main body structure 1, a matching piece 42 is connected with the rocker component 3, and when the rocker component 3 rotates relative to the main body structure 1, the locking piece 41 can be clamped with or separated from the matching piece 42.

[0036] In the embodiment, the rocker component 3 of the hands-free breast pump 100 is rotationally connected with the main body structure 1 to realize relative movement, for example, the rocker component 3 is connected with the main body structure 1 through a shaft hole structure and is provided with a reset force through the negative pressure diaphragm 2. The locking piece 41 is a buckle fixed on the main body structure 1, and the matching piece 42 is a clamping groove on the rocker component 3. When the rocker component 3 rotates and compresses the spring, the elastic buckle is clamped with the clamping groove to lock the position of the rocker component 3 to maintain the negative pressure; when the rocker component 3 is released, the elastic reset is returned to the initial position, and the negative pressure is released.

[0037] In one embodiment of the utility model, please refer to Figure 3 The locking piece 41 and the main body structure 1 form a locking groove 41a, and the matching piece 42 has a matching section 421 close to the locking piece 41, which can abut against the inner wall of the locking groove 41a to make the rocker component 3 in the locked state.

[0038] In one embodiment, the locking piece 41 and the main body structure 1 form a locking groove 41a, and the locking piece 41 is designed as a protruding structure fixed on the outer wall of the main body structure 1 and forms the locking groove 41a with the outer wall of the main body structure 1. The matching piece 42 has a matching section 421 close to the locking piece 41, which can abut against the inner wall of the locking groove 41a. When the rocker component 3 rotates relative to the main body structure 1, the matching section 421 of the matching piece 42 can be clamped with the inner wall of the locking groove 41a, so that the rocker component 3 is fixed in the locked state to maintain the negative pressure. The design of the locking assembly 4 makes the structure of the whole breast pump more compact, reduces the space occupation, and is convenient for carrying and storing. The user only needs to rotate the rocker component 3 to realize the maintenance or release of the negative pressure through the locking assembly 4, which is simple to operate and easy to use.

[0039] In one embodiment of the utility model, please refer to Figure 3 and Figure 4 The side wall of the locking groove 41a forms a limiting groove 41b, and the rocker component 3 is configured to move along the extension direction of the limiting groove 41b relative to the main body structure 1 to drive the matching section 421 to move along the locking groove 41a and be limited in the limiting groove 41b.

[0040] In the embodiment, the locking groove 41a is designed as a groove structure, and a limiting groove 41b is formed on the side wall of the locking groove 41a. The limiting groove 41b can be a series of grooves distributed along the length direction of the locking groove 41a. The rocker component 3 is configured to move along the extension direction of the limiting groove 41b relative to the main body structure 1, so as to drive the matching segment 421 to move along the locking groove 41a and be limited in the limiting groove 41b. The matching segment 421 can be a protrusion or a bending structure on the rocker component 3. When the rocker component 3 moves, the matching segment 421 slides along the limiting groove 41b on the side wall of the locking groove 41a until it is limited by the limiting groove 41b. For example, a boss can be arranged on the rocker component 3. When the rocker component 3 moves, the boss moves along the limiting groove 41b on the side wall of the locking groove 41a until the edge of the boss abuts against the edge of the limiting groove 41b, so as to realize the position locking of the rocker component 3. Through the design of the limiting groove 41b, the position of the rocker component 3 can be accurately limited, so as to ensure the stability and repeatability of the breast pump in the working process and improve the breast pumping efficiency. The design of the limiting groove 41b can prevent the rocker component 3 from moving accidentally in the negative pressure state, and avoid the interruption of breast pumping or the loss of negative pressure caused by the change of the position of the rocker component 3. By forming the limiting groove 41b on the side wall of the locking groove 41a, the structure of the locking assembly 4 is simplified, the additional parts and assembly steps are reduced, and the manufacturing cost and maintenance difficulty are reduced.

[0041] In an embodiment of the utility model, please refer to Figures 3 to 5 , the locking piece 41 is provided with a letting port 41c at one end, the letting port 41c is communicated with the limiting groove 41b and the outside world, the matching piece 42 is provided with a connecting segment 422 close to the rocker component 3, the connecting segment 422 is connected with the matching segment 421, and the connecting segment 422 can pass through the letting port 41c, and the locking piece 41 is formed with an anti-disengagement platform 411 at one end close to the letting port 41c.

[0042] In one embodiment, the locking member 41 has an opening 41c at one end thereof, which is designed to communicate the limiting slot 41b with the outside, allowing the connecting segment 422 of the cooperating member 42 to pass through. Specifically, the locking member 41 can be a component fixed on the main body structure 1, which has an opening or slot at one end thereof, i.e. the opening 41c. The opening 41c communicates with the limiting slot 41b, forming a passage. The cooperating member 42 is designed to have two parts, i.e. the connecting segment 422 close to the rocker member 3 and the cooperating segment 421 close to the locking member 41. The connecting segment 422 connects the cooperating segment 421 and can pass through the opening 41c, so that the cooperating segment 421 can abut against the inner wall of the locking slot 41a at the other end of the opening 41c. For example, the connecting segment 422 can be a shaft or rod, which passes through the opening 41c and extends to the cooperating segment 421, which can be a pin or peg, which abuts against the inner wall of the locking slot 41a to achieve the locking or unlocking of the rocker member 3. In order to ensure the stable operation of the cooperating member 42 near the limiting slot 41b, the end of the locking member 41 close to the opening 41c is specially designed with an anti-displacement platform 411. The anti-displacement platform 411 can be a protruding structure, which is designed in height and position to allow the connecting segment 422 of the cooperating member 42 to smoothly bypass the anti-displacement platform 411 when passing through the opening 41c, preventing unnecessary displacement of the cooperating member 42. The design of the anti-displacement platform 411 provides a physical barrier to ensure the stability of the cooperating member 42 near the limiting slot 41b, preventing the cooperating member 42 from falling off due to external force, thereby improving the stability and reliability of the entire breast pump. The stability of the cooperating member 42 is crucial during the breast pumping process. The design of the anti-displacement platform 411 reduces the risk of accidental falling of the cooperating member 42, ensuring the continuity and safety of the breast pumping process.

[0043] In one embodiment of the present application, please refer to Figure 1 , one of the locking member 41 and the cooperating member 42 is a magnetic member, and the other of the locking member 41 and the cooperating member 42 is a magnet.

[0044] In an embodiment, the locking member 41 can be designed as a permanent magnet component, for example a permanent magnet, which is fixed at one end of the main body structure 1. The cooperating member 42 can be a magnetic member, such as a ferrous ring or a component made of magnetic material, which can interact with the permanent magnet of the locking member 41. When the cooperating member 42 is close to the locking member 41, it will be attracted and adsorbed together with the locking member 41 due to the magnetic force, thereby achieving the locking of the rocker 31. When unlocking is needed, the position or direction of the cooperating member 42 can be changed to move out of the magnetic force range of the locking member 41, thereby achieving unlocking. This design can be realized in two different ways: one is to rotate the cooperating member 42 to move out of the magnetic force line, and the other is to linearly move the cooperating member 42 to move out of the attraction range of the locking member 41. Using the magnetic locking mechanism, the user only needs to simply move the cooperating member 42 to achieve locking and unlocking, which is simple and convenient to operate. The magnetic locking assembly 4 occupies a small space, which is helpful to realize the compact design of the breast pump, and is convenient for carrying and storing. The magnetic locking mechanism can quickly respond to achieve instantaneous locking and unlocking, which improves the convenience of use.

[0045] In an embodiment of the utility model, please refer to Figure 2 and Figure 5 , the rocker component 3 further includes a rocker 31 and a connecting rod 32, the connecting rod 32 is connected with the negative pressure diaphragm 32, and the rocker 31 is provided with a connecting hole 31a at one end close to the connecting rod 32, and the connecting rod 32 is detachably connected with the connecting hole 31a.

[0046] In an embodiment, the rocker component 3 includes a rocker 31 and a connecting rod 32, the connecting rod 32 is connected with the negative pressure diaphragm 32, and the rocker 31 is provided with a connecting hole 31a at one end close to the connecting rod 32, and the connecting rod 32 is detachably connected with the connecting hole 31a through a bolt or a buckle structure. The rocker 31 is designed with a connecting hole 31a at one end close to the connecting rod 32, and the hole can be a through hole or a blind hole, which is used for cooperation with the connecting rod 32. The connecting rod 32 and the connecting hole 31a are connected through a detachable connection mode, for example, a bolt, a pin, a quick connector or a buckle, so that the connecting rod 32 can be conveniently installed and detached. Such design allows the connecting rod 32 to be quickly separated from the rocker 31 when replacement or maintenance is needed, which is convenient for operation and maintenance. The detachable connection mode allows the connecting rod 32 to be quickly and conveniently detached from the rocker 31 when damaged or replaced, which reduces the difficulty and cost of maintenance.

[0047] In an embodiment of the utility model, please refer to Figure 2 and Figure 5 , the connecting rod 32 has a plurality of pressure regulating bosses 321 arranged at intervals, and each pressure regulating boss 321 is connected with the connecting hole 31a to generate different negative pressures in the breast pumping channel 1a.

[0048] In the present embodiment, the connecting rod 32 is designed to have a plurality of pressure regulating bosses 321 arranged at intervals, which are uniformly or as needed distributed along the length direction of the connecting rod 32. Each pressure regulating boss 321 is provided with a structure corresponding to the connecting hole 31a of the rocker 31, so that the rocker 31 can be connected with different pressure regulating bosses 321 through the connecting hole 31a, so as to change the compression degree of the negative pressure diaphragm 32, and further adjust the size of the negative pressure generated in the milk suction channel 1a. Specifically, one end of the rocker 31 is provided with a connecting hole 31a, which can be a through hole or a blind hole, for cooperating with the pressure regulating boss 321 on the connecting rod 32. Through a detachable connection mode such as a bolt, a pin, a quick connector or a buckle, the connecting rod 32 and the connecting hole 31a of the rocker 31 can be conveniently detached and reconnected to different pressure regulating bosses 321, so as to realize the adjustment of the negative pressure. By arranging a plurality of pressure regulating bosses 321, the breast pump can adjust the negative pressure according to individual needs, and provide more personalized breast pumping experience. Different mothers have different comfort requirements for suction, and the design makes the breast pump adapt to the needs of different users and improve the comfort during use. The design of a plurality of pressure regulating bosses 321 makes the breast pump adapt to the needs of different stages of lactation, enhancing the adaptability of the product.

[0049] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A hands-free breast pump having a negative pressure membrane (2) and a breast pumping channel (la), characterized in that, The hands-free breast pump comprises: a rocker component (3) for driving the negative pressure diaphragm (2) to move to generate negative pressure in the breast pumping channel (1a); and a locking assembly (4) for locking the position of the rocker component (3) to maintain or release the negative pressure of the breast pumping channel (1a); the locking assembly (4) is arranged on the rocker component (3).

2. The hands-free breast pump of claim 1, wherein, The locking assembly (4) comprises a locking piece (41) and a matching piece (42), the locking piece (41) and the matching piece (42) are detachably connected, and the locking piece (41) can be locked or separated from the matching piece (42) to maintain or release the negative pressure of the breast pumping channel (1a).

3. The hands-free breast pump of claim 2, wherein, The locking piece (41) is provided with at least one locking portion, and the matching piece (42) is provided with a plurality of matching portions. Alternatively, the locking piece (41) is provided with a plurality of locking portions, and the matching piece (42) is provided with at least one matching portion. At least one of the locking portions can be locked with any of the matching portions to change the negative pressure in the breast pumping channel (1a).

4. The hands-free breast pump of claim 2, wherein, The hands-free breast pump comprises a main body structure (1), the rocker component (3) is rotationally connected with the main body structure (1), the locking piece (41) is connected with the main body structure (1), the matching piece (42) is connected with the rocker component (3), and when the rocker component (3) rotates relative to the main body structure (1), the locking piece (41) can be clamped or separated from the matching piece (42).

5. The hands-free breast pump of claim 4, wherein, The locking piece (41) and the main body structure (1) form a locking groove (41a), the matching piece (42) has a matching section (421) close to the locking piece (41), and the matching section (421) can abut against the inner wall of the locking groove (41a) to make the rocker component (3) in a locked state.

6. The hands-free breast pump of claim 5, wherein, The side wall of the locking groove (41a) forms a limiting groove (41b), and the rocker component (3) is configured to move along the extension direction of the limiting groove (41b) relative to the main body structure (1) to drive the matching section (421) to move along the locking groove (41a) and be limited in the limiting groove (41b).

7. The hands-free breast pump of claim 6, wherein, One end of the locking piece (41) is provided with a gap (41c) that communicates the limiting groove (41b) with the outside, the matching piece (42) has a connecting section (422) close to the rocker component (3), the connecting section (422) is connected with the matching section (421), and the connecting section (422) can pass through the gap (41c); one end of the locking piece (41) close to the gap (41c) forms an anti-falling table (411).

8. The hands-free breast pump of claim 2, wherein, One of the locking piece (41) and the matching piece (42) is a magnetic piece, and the other of the locking piece (41) and the matching piece (42) is a magnet.

9. The hands-free breast pump of any one of claims 1 to 7, wherein, The rocker component (3) comprises a rocker (31) and a connecting rod (32), the connecting rod (32) is connected with the negative pressure diaphragm (2), the rocker (31) is provided with a connecting hole (31a) near one end of the connecting rod (32), and the connecting rod (32) is detachably connected with the connecting hole (31a).

10. The hands-free breast pump of claim 9, wherein, The connecting rod (32) has a plurality of pressure regulating bosses (321) arranged at intervals, and each pressure regulating boss (321) can be connected with the connecting hole (31a) to generate different negative pressures in the milk suction channel (1a).

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