Suction bowl structure and device for breast pump

Abstract

The present invention discloses a suction bowl structure and device for a breast pump, belonging to the technical field of mother and baby products, which includes a housing and an adjustment mechanism. The housing includes a body having a receiving cavity, an open end and a mounting end respectively communicating with the receiving cavity. The adjustment mechanism includes a middle plate assembly movably clamped in the receiving cavity and an adjustment rod. The middle plate assembly includes a middle plate and a sealing ring wound around the edge of the middle plate. The sealing ring is located between the middle plate and the inner wall of the body. The adjustment rod is threadedly connected to the mounting end. One end of the adjustment rod is connected to the middle plate, and the other end of the adjustment rod penetrates through the mounting end. The adjustment rod drives the middle plate assembly to slide between one side of the receiving cavity close to the open end and one side of the receiving cavity close to the mounting end. The present invention achieves the technical effect that the volume of the suction bowl can be freely distributed and the suction force can be adjusted.

Description

Technical Field

[0001] The present invention belongs to the technical field of mother and baby products, and particularly relates to a suction bowl structure and device for a breast pump. Background Art

[0002] A breast pump refers to a tool used to extract breast milk accumulated in the mammary glands. The breast pump is applicable when the baby cannot directly suck breast milk, or when there is remaining breast milk, etc.

[0003] Currently, in existing mother and baby products, a suction bowl with a fixed volume structure is usually adopted, and negative pressure is generated through the suction bowl to achieve the function of milk suction. However, since the volume of the suction bowl is fixed, and the power source of the suction force comes from a diaphragm pump or a piezoelectric pump, during the milk suction process, the suction force depends on the output negative pressure of the pump and the conversion efficiency of the suction bowl. When the suction bowl has a fixed volume structure, the suction force of the suction bowl cannot be adjusted, resulting in the suction force being inconvenient to adjust according to the needs of different people. This makes the breast pump either have too much suction force, which is likely to cause pain to people, or have too little suction force, requiring people to adjust their postures and making it impossible to lie down and suck milk, etc.

[0004] In summary, in the existing mother and baby product technology, there is a technical problem that the volume of the suction bowl is fixed and the suction force cannot be adjusted. Summary of the Invention

[0005] The technical problem to be solved by the present invention is the technical problem that the volume of the suction bowl is fixed and the suction force cannot be adjusted.

[0006] To solve the above technical problem, the present invention provides a suction bowl structure for a breast pump. The structure includes: a housing and an adjustment mechanism. The housing includes a body having a receiving cavity, and an open end and a mounting end respectively communicating with the receiving cavity; the adjustment mechanism includes a middle plate assembly movably clamped in the receiving cavity and an adjustment rod. The middle plate assembly includes a middle plate and a sealing ring wound around the edge of the middle plate. The sealing ring is located between the middle plate and the inner wall of the body; the adjustment rod is threadedly connected to the mounting end, one end of the adjustment rod is connected to the middle plate, and the other end of the adjustment rod penetrates through the mounting end; the adjustment rod drives the middle plate assembly to slide between one side of the receiving cavity close to the open end and one side of the receiving cavity close to the mounting end.

[0007] Further, the body includes: a top housing and a bottom housing. The open end is provided on the top housing; the bottom housing is connected to the top housing, and the bottom housing and the top housing enclose the receiving cavity.

[0008] Further, the structure further includes: an elastic member, one end of the elastic member is connected to the housing, the other end of the elastic member is connected to the middle plate, and the elastic member is located in the accommodation cavity.

[0009] Further, the elastic member includes: a first return spring, a second return spring, and a third return spring. One end of the first return spring is connected to the housing, and the other end of the first return spring is connected to the middle plate; one end of the second return spring is connected to the housing, and the other end of the second return spring is connected to the middle plate; one end of the third return spring is connected to the housing, and the other end of the third return spring is connected to the middle plate. The first return spring, the second return spring, and the third return spring are distributed in a three-tower shape.

[0010] Further, the adjusting rod includes: an adjusting knob and a threaded rod. The threaded rod is threadedly connected to the mounting end. One end of the threaded rod is connected to the middle plate, and the other end of the threaded rod passes through the mounting end and is connected to the adjusting knob. The mounting end is provided with a threaded hole through which the threaded rod can pass and is screwed to the threaded rod.

[0011] Further, the structure further includes: one side of the sealing ring is in a T-shaped groove, the edge of the middle plate matches the T-shaped groove, and the edge of the middle plate is embedded in the T-shaped groove; a set screw, one end of the set screw is connected to the middle plate, and the other end of the set screw is connected to one end of the adjusting rod.

[0012] Further, the adjusting mechanism further includes: a limit washer, the limit washer is installed on the middle plate, and the limit washer is connected to one end of the set screw.

[0013] Further, the structure further includes: a silica gel diaphragm, the silica gel diaphragm is arranged on the inner wall of the body, and the silica gel diaphragm is located between the open end and the middle plate.

[0014] Further, the structure further includes: a stopper fixed on the inner wall of the body and used to stop the middle plate.

[0015] According to another aspect of the present invention, the present invention further provides a device for a breast pump, including a three-way breast cup, and further including the suction cup structure for the breast pump, and the three-way breast cup is communicated with the open end.

[0016] Beneficial effects:

[0017] The present invention provides a suction cup structure for a breast pump. The middle plate assembly of the adjustment mechanism is movably clamped inside the accommodation cavity of the housing. The sealing ring of the middle plate assembly is wound around the edge of the middle plate, and the sealing ring is located between the middle plate and the inner wall of the main body of the housing. The adjustment rod is threadedly connected to the installation end of the housing. One end of the adjustment rod is connected to the middle plate, and the other end of the adjustment rod penetrates through the installation end. The adjustment rod drives the middle plate assembly to slide between one side of the accommodation cavity close to the open end and one side of the accommodation cavity close to the installation end. Thus, when the middle plate of the middle plate assembly is driven by the rotation of the adjustment rod to approach the open end, the volume of the cavity on the side of the middle plate close to the open end inside the housing will decrease, and the working space will become smaller. At this time, the suction force will be smaller. When the middle plate of the middle plate assembly is driven by the rotation of the adjustment rod to approach the installation end, the volume of the cavity on the side of the middle plate close to the open end inside the housing will increase, and the working space will become larger. At this time, the suction force will be larger. It is possible to adjust the size of the cavity volume inside the suction cup, realizing adjustable suction force of the suction cup. Subsequently, the volume of the internal space of the suction cup can be adjusted to realize the adjustment of the suction force of the suction cup. Thus, the technical effect that the volume of the suction cup can be freely distributed and the suction force can be adjusted is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 Schematic diagram of a suction cup structure for a breast pump provided by an embodiment of the present invention Figure 1 ;

[0020] Figure 2 Schematic diagram of an elastic component in a suction cup structure for a breast pump provided by an embodiment of the present invention Figure 1 ;

[0021] Figure 3 Schematic diagram of a top housing in a suction cup structure for a breast pump provided by an embodiment of the present invention Figure 1 ;

[0022] Figure 4 Schematic diagram of a silicone diaphragm in a suction cup structure for a breast pump provided by an embodiment of the present invention Figure 1 ;

[0023] Figure 5 Schematic diagram of a bottom housing in a suction cup structure for a breast pump provided by an embodiment of the present invention Figure 1 ;

[0024] Figure 6Schematic diagram of the elastic component in the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 2 ;

[0025] Figure 7 Schematic diagram of the middle plate in the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 1 ;

[0026] Figure 8 Schematic diagram of the bottom housing in the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 2 ;

[0027] Figure 9 Schematic diagram of the silicone diaphragm in the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 2 ;

[0028] Figure 10 Schematic diagram of the top housing in the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 2 ;

[0029] Figure 11 Schematic diagram of the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 2 ;

[0030] Figure 12 Schematic diagram of the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 3 。 Detailed implementation manners

[0031] The present invention discloses a suction bowl structure for a breast pump. The middle plate assembly of the adjusting mechanism is movably clamped inside the accommodating cavity 11 of the housing. The sealing ring 23 of the middle plate assembly is wound around the edge of the middle plate 21, and the sealing ring 23 is located between the middle plate 21 and the inner wall of the main body of the housing. The adjusting rod is threadedly connected to the mounting end 14 of the housing. One end of the adjusting rod is connected to the middle plate 21, and the other end of the adjusting rod penetrates through the mounting end 14. The adjusting rod drives the middle plate assembly to slide between one side of the accommodating cavity 11 close to the opening end 13 and one side of the accommodating cavity 11 close to the mounting end 14. Thus, when the middle plate 21 of the middle plate assembly approaches the opening end 13 by rotating the adjusting rod, the volume of the cavity on the side of the middle plate 21 close to the opening end 13 inside the housing decreases, the working space becomes smaller, and the suction force will be smaller at this time. When the middle plate 21 of the middle plate assembly approaches the mounting end 14 by rotating the adjusting rod, the volume of the cavity on the side of the middle plate 21 close to the opening end 13 inside the housing increases, the working space becomes larger, and the suction force will be larger at this time. It is possible to adjust the size of the cavity volume inside the suction bowl, so as to realize adjustable suction force of the suction bowl. Subsequently, the volume of the internal space of the suction bowl can be adjusted to realize the adjustment of the suction force of the suction bowl. Thus, the technical effect that the volume of the suction bowl can be freely allocated and the suction force can be adjusted is achieved.

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention; among them, the keyword "and / or" involved in this embodiment represents two situations, namely, and and or. In other words, the A and / or B mentioned in the embodiments of the present invention represents two situations of A and B, A or B, and describes three states existing between A and B. For example, A and / or B means: only including A but not B; only including B but not A; including both A and B.

[0033] It should be understood that although terms such as "first", "second", etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer or part discussed below may be referred to as the second element, component, region, layer or part. Spatially relative terms such as "below", "above", etc. may be used herein to facilitate the description of the relationship between one element or feature and another element or feature. It can be understood that, in addition to the orientations shown in the figures, spatially relative terms also include different orientations of the device during use or operation. For example, if the device in the figure is flipped, the element or feature described as "below" will be oriented as "above" other elements or features. Thus, the exemplary term "below" can include both upward and downward orientations. The device may be oriented (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are to be interpreted accordingly.

[0034] Meanwhile, in the embodiments of the present invention, when a component is referred to as "fixed to" another component, it may be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it may be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the embodiments of the present invention are only for illustrative purposes and are not intended to limit the present invention.

[0035] Embodiment 1

[0036] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12 , Figure 1 is a schematic diagram of a suction cup structure for a breast pump provided by an embodiment of the present invention Figure 1 , Figure 2 is a schematic diagram of an elastic member in a suction cup structure for a breast pump provided by an embodiment of the present invention Figure 1 , Figure 3Schematic diagram of the top shell 121 in the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 1 , Figure 4 Schematic diagram of the silicone diaphragm 6 in the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 1 , Figure 5 Schematic diagram of the bottom shell 122 in the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 1 , Figure 6 Schematic diagram of the elastic component in the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 2 , Figure 7 Schematic diagram of the middle plate 21 in the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 1 , Figure 8 Schematic diagram of the bottom shell 122 in the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 2 , Figure 9 Schematic diagram of the silicone diaphragm 6 in the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 2 , Figure 10 Schematic diagram of the top shell 121 in the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 2 , Figure 11 Schematic diagram of the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 2 , Figure 12 Schematic diagram of the suction cup structure for a breast pump provided by an embodiment of the present invention Figure 3 . A suction cup structure for a breast pump provided by an embodiment of the present invention includes a shell and an adjustment mechanism. The shell and the adjustment mechanism will be described in detail as follows:

[0037] Regarding the shell:

[0038] The shell includes a body having a receiving cavity 11 and an open end 13 and a mounting end 14 that are respectively in communication with the receiving cavity 11. The open end 13 can be in communication with a three-way cup 8. There are three interfaces in the three-way cup 8 that can be in communication with the outside, and the three interfaces are respectively in communication with a breast shield 5, a storage bottle 4, and the open end 13. The body of the shell includes a top shell 121 and a bottom shell 122. The open end 13 is provided in the top shell 121. The bottom shell 122 is connected to the top shell 121. The receiving cavity 11 can be formed by enclosing the bottom shell 122 and the top shell 121. There is an interference fit between the bottom shell 122 and the sealing ring 23. A silicone diaphragm 6 can be provided between the open end 13 and the following middle plate 21. Through the silicone diaphragm 6, the suction force inside the receiving cavity 11 can be transmitted to the breast shield 5, and it can prevent the milk in the breast shield 5 from flowing into the inside of the receiving cavity 11.

[0039] Specifically, the interior of the bottom housing 122 can be presented as a concave groove, and the cross-section of the concave groove can be circular. The top housing 121 covers the opening of the bottom housing 122, so that the top housing 121 and the bottom housing 122 of the main body in the housing are detachably connected to form a receiving cavity 11. Inside the receiving cavity 11, there is a space for accommodating the middle plate 21, the adjusting rod, and the sealing ring 23 in the adjusting mechanism. For example, on one side of the bottom housing 122 close to the top housing 121, there are three equally spaced clamping grooves 15, and on one side of the top housing 121 close to the bottom housing 122, there are clamping heads 16 for clamping with the corresponding clamping grooves 15. After inserting each clamping head 16 into the corresponding clamping groove 15, the top housing 121 is rotated relative to the bottom housing 122, and the fixed connection between the top housing 121 and the bottom housing 122 can be achieved. Then, by rotating the top housing 121 in the reverse direction, each clamping head 16 can be withdrawn from the corresponding clamping groove 15, so that the top housing 121 and the bottom housing 122 are separated from each other, realizing the detachable connection between the top housing 121 and the bottom housing 122, which is convenient for installation and disassembly and cleaning. An open end 13 communicating with the receiving cavity 11 is provided on the top housing 121, and the open end 13 is used to communicate with the three-way cup 8. An installation end 14 for the adjusting rod to pass through is provided on the bottom housing 122, and threads can be provided inside the installation end 14, so that the adjusting rod is threadedly connected inside the installation end 14. The bottom housing 122 in the housing can be in interference fit with the sealing ring 23, so that when the sealing ring 23 moves in the direction close to the open end 13 or in the direction away from the open end 13, the sealing ring 23 will be in close contact with the bottom housing 122. The sealing ring 23 can divide the interior of the receiving cavity 11 into a space on the side close to the open end 13, that is, the first cavity; and the sealing ring 23 divides the interior of the receiving cavity 11 into a space on the side close to the installation end 14, that is, the second cavity. By moving the sealing ring 23 fixed on the following middle plate 21 in the direction close to the open end 13, the volume of the first cavity can be enlarged, and the volume of the second cavity can be reduced. Or by moving the sealing ring 23 in the direction away from the open end 13, the volume of the first cavity can be reduced, and the volume of the second cavity can be enlarged, thereby realizing the dynamic adjustment of the volume of the first cavity and the volume of the second cavity by moving the following middle plate 21.

[0040] For the adjusting mechanism:

[0041] The adjusting mechanism includes a middle plate assembly and an adjusting rod. The middle plate assembly includes a middle plate 21 and a sealing ring 23. The middle plate 21 is located inside the accommodating cavity 11. The adjusting rod is threadedly connected to the mounting end 14. One end of the adjusting rod is connected to the middle plate 21, and the other end of the adjusting rod penetrates through the mounting end 14. The adjusting rod can drive the middle plate 21 and the sealing ring 23 in the middle plate assembly to slide together between one side of the accommodating cavity 11 close to the opening end 13 and one side of the accommodating cavity 11 close to the mounting end 14. That is, the adjusting rod can be pushed to pull the middle plate 21 and the sealing ring 23 to move inside the accommodating cavity 11 in the direction close to the opening end 13, or the adjusting rod can be pushed to pull the middle plate 21 and the sealing ring 23 to move inside the accommodating cavity 11 in the direction close to the mounting end 14. The sealing ring 23 is located in the accommodating cavity 11. The sealing ring 23 is wound around the edge of the middle plate 21. The sealing ring 23 is located between the middle plate 21 and the inner wall of the main body in the housing. The size inside the accommodating cavity 11 is smaller than the size of the middle plate assembly. For example, the gap between the inner wall of the main body in the housing located inside the accommodating cavity 11 and the middle plate 21 along the horizontal plane direction is larger than the width of the sealing ring 23 along the horizontal plane direction, so that the sealing ring 23 is in interference fit with the main body. The sealing ring 23 is located between the middle plate 21 and the main body. The material of the sealing ring 23 is silicone material. During the sliding process of the sealing ring 23 along the inner wall of the bottom housing 122, good sealing performance will be achieved between the sealing ring 23 and the bottom housing 122. One side of the sealing ring 23 presents a T-shaped groove, and the edge of the middle plate 21 matches the T-shaped groove. The edge of the middle plate 21 is embedded in the T-shaped groove, such as Figure 1As shown, the opening of the T-shaped groove faces the edge of the middle plate 21, and the edge of the middle plate 21 presents a T-shaped shape that matches the internal space structure of the groove. After the sealing ring 23 is firmly connected to the middle plate 21, the sealing ring 23 will not shift relative to the middle plate 21 in the vertical direction, which is beneficial to improving the sealing performance of the sealing ring 23. The adjusting rod may include an adjusting knob 221 and a threaded rod 222. The threaded rod 222 is threadedly connected to the mounting end 14. One end of the threaded rod 222 is connected to the middle plate 21, and the other end of the threaded rod 222 passes through the mounting end 14 and is connected to the adjusting knob 221. The adjusting mechanism may further include a set screw 24 and a limit washer 25. One end of the set screw 24 is connected to the middle plate 21, and the other end of the set screw 24 is connected to one end of the adjusting rod. The limit washer 25 is mounted on the middle plate 21, and the limit washer 25 is connected to one end of the set screw 24. A threaded hole 141 through which the threaded rod 222 can pass and is threadedly connected to the threaded rod 222 is provided in the middle of the mounting end 14. By rotating the adjusting knob 221, the threaded rod 222 can be driven to rotate. During the rotation of the threaded rod 222, the threaded rod 222 will extend outward or inward along the threaded hole 141, thereby driving the middle plate 21 to move. A plurality of stoppers 7 may also be provided on the inner side wall of the bottom housing 122. The stoppers 7 protrude from the surface of the side wall. The projection of the stoppers 7 on the middle plate along the direction of the middle plate approaching the open end is located within the middle plate. The stoppers 7 are located between the middle plate 21 and the silicone diaphragm 6. In this way, when the middle plate 21 moves to the position of the stoppers 7, the stoppers 7 can prevent the middle plate 21 from moving towards the open end 13, realizing the limit of the maximum stroke of the middle plate 21, that is, after the stoppers are fixed on the inner wall of the body, the middle plate can be blocked by the stoppers.

[0042] Specifically, the middle plate 21 can be circular. An installation area can be provided at the center of the middle plate 21. There is a space in the installation area for accommodating the limit washer 25 and the set screw 24. The limit washer 25 is rotatably arranged in the installation area. For example, one end of the set screw 24 can pass through the middle plate 21 and then be connected to the limit washer 25, or the limit washer 25 is embedded inside the installation area of the middle plate 21, and the limit washer 25 is sleeved on one end of the set screw 24. After the limit washer 25 is fixed to the threaded rod 222 by the set screw 24, the limit washer 25 can rotate relative to the middle plate 21. That is to say, when the threaded rod 222 drives the limit washer 25 to rotate, the middle plate 21 will not rotate with the limit washer 25 at this time. In other embodiments, threads are provided on the other end of the set screw 24. The threads provided on the other end of the set screw 24 are matched with the threads of the installation end 14, so that the other end of the set screw 24 is threadedly connected in the installation end 14. The part of the other end of the set screw 24 extending outside the installation end 14 is fixedly connected to the adjustment knob 221.

[0043] When the threaded rod 222 is rotated, since the set screw 24 will drive the limit washer 25 to rotate relative to the middle plate 21, the middle plate 21 will not rotate during the movement. At this time, the limit washer 25 will push the middle plate 21 to move in the direction close to the installation end 14 under the drive of the set screw 24. When the set screw 24 is rotated in the reverse direction, the following elastic component will push the middle plate 21 to move in the direction close to the open end 13. In this way, when the middle plate 21 is close to the open end 13, the volume of the cavity on the side of the middle plate 21 close to the open end 13 inside the housing will decrease. For the front cavity formed between the human breast and the breast pump cup 5 and the rear cavity inside the suction cup, due to the decrease in the volume of the cavity on the side of the middle plate 21 close to the open end 13 inside the housing, the volume ratio of the front cavity and the rear cavity will be adjusted, and at this time the suction force of the suction cup will be smaller. When the middle plate 21 is close to the installation end 14, the volume of the cavity on the side of the middle plate 21 close to the open end 13 inside the housing will increase, and at this time the suction force of the suction cup will be larger.

[0044] An aspiration bowl structure provided by an embodiment of the present invention may further include an elastic member. One end of the elastic member is connected to the housing, and the other end of the elastic member is connected to the middle plate 21. The elastic member is located in the accommodation cavity 11. The elastic member may include a first return spring 31, a second return spring 32, and a third return spring 33. One end of the first return spring 31 is connected to the housing, and the other end of the first return spring 31 is connected to the middle plate 21. One end of the second return spring 32 is connected to the housing, and the other end of the second return spring 32 is connected to the middle plate 21. One end of the third return spring 33 is connected to the housing, and the other end of the third return spring 33 is connected to the middle plate 21. The first return spring 31, the second return spring 32, and the third return spring 33 are distributed in a three-tower shape.

[0045] Specifically, in order to achieve the steady state of the middle plate 21 during the friction between the sealing ring 23 and the bottom housing 122, the first return spring 31, the second return spring 32, and the third return spring 33 may be installed between the middle plate 21 and the bottom housing 122. The first return spring 31, the second return spring 32, and the third return spring 33 are evenly arranged along the circumferential direction of the middle plate 21 into a three-tower structure, such as installing the first return spring 31, the second return spring 32, and the third return spring 33 at equal intervals in the support area 1221 of the bottom housing 122. In this way, during the process of moving the middle plate 21, the elastic force generated by the first return spring 31, the second return spring 32, and the third return spring 33 can make the middle plate 21 always in a stable state. When the volume of the middle plate 21 is relatively large, a fourth return spring may be added. For example, the first return spring 31, the second return spring 32, the third return spring 33, and the fourth return spring are installed between the middle plate 21 and the bottom housing 122. The first return spring 31, the second return spring 32, the third return spring 33, and the fourth return spring are equally spaced. In this way, during the process of moving the middle plate 21, the first return spring 31, the second return spring 32, the third return spring 33, and the fourth return spring will generate a greater elastic force, and under the action of the elastic force of the first return spring 31, the second return spring 32, the third return spring 33, and the fourth return spring, the relatively large-volume middle plate 21 can also always be in a stable state.

[0046] In actual use, the three-way breast cup 8 connected to the open end 13 in the housing will be connected to the human tissue and the duckbill valve respectively. In this way, a front cavity will be formed between the human breast and the breast pump cover 5, and the inner space of the suction bowl is the rear cavity. When the volume of the rear cavity is slightly larger than that of the front cavity, a reasonable suction force will be generated. The stroke of the middle plate 21, that is, the upper and lower limit positions of the movement of the middle plate 21, can be limited by the above-mentioned stoppers 7 on the inner wall of the suction bowl. For example, three symmetrically arranged convex stoppers 7 are formed on the inner wall of the bottom housing 122 near the open end 13. The position of the middle plate 21 moving upward is restricted by the stopper 7, so that when the stroke of the middle plate 21 reaches the bottom, the volume ratio of the rear cavity to the front cavity can be 1.2:1. The volume of the rear cavity can be adjusted by moving the middle plate 21. The pitch of the threaded rod 222 in the adjusting rod can be set to 1 mm, that is, the stroke of one turn of the threaded rod 222 is 1 mm. An anti-fooling knob can be arranged outside the threaded rod 222, such as the adjusting knob 221 with an arc-shaped outer surface, to adjust the position of the middle plate 21 and adjust and distribute the volume of the rear cavity and the front cavity. A dial for defining the suction gear value can also be arranged on the outer bottom of the bottom housing 122 relative to the outside of the accommodation cavity 11.

[0047] The present invention provides a suction bowl structure for a breast pump. The middle plate assembly of the adjusting mechanism is movably clamped inside the accommodation cavity 11 of the housing. The sealing ring 23 of the middle plate assembly is wound around the edge of the middle plate 21, and the sealing ring 23 is located between the middle plate 21 and the inner wall of the main body in the housing. The adjusting rod is threadedly connected to the installation end 14 of the housing. One end of the adjusting rod is connected to the middle plate 21, and the other end of the adjusting rod penetrates through the installation end 14. The adjusting rod drives the middle plate assembly to slide between one side of the accommodation cavity 11 close to the open end 13 and one side of the accommodation cavity 11 close to the installation end 14. In this way, when the middle plate 21 of the middle plate assembly driven by the rotation of the adjusting rod approaches the open end 13, the volume of the cavity on the side of the middle plate 21 close to the open end 13 inside the housing will decrease, and the working space will become smaller. At this time, the suction force will be smaller. When the middle plate 21 of the middle plate assembly driven by the rotation of the adjusting rod approaches the installation end 14, the volume of the cavity on the side of the middle plate 21 close to the open end 13 inside the housing will increase, and the working space will become larger. At this time, the suction force will be larger. The volume of the cavity inside the suction bowl can be adjusted, and the suction force of the suction bowl can be adjusted. Then, the volume of the inner space of the suction bowl can be adjusted, and the suction force of the suction bowl can be adjusted. Thus, the technical effect that the volume of the suction bowl can be freely distributed and the suction force can be adjusted is achieved.

[0048] To elaborate on a device for a breast pump provided by the present invention, the above-mentioned Embodiment 1 elaborates on a suction bowl structure for a breast pump. Based on the same inventive concept, the present application also provides a device for a breast pump. For details, see Embodiment 2.

[0049] Embodiment 2

[0050] Embodiment 2 of the present invention provides a device for a breast pump, including a three-way cup 8, characterized in that it further includes the suction bowl structure for the breast pump as described above, and the three-way cup 8 is communicated with the open end 13.

[0051] The present invention provides a device for a breast pump. The middle plate assembly of the adjusting mechanism is movably clamped inside the accommodating cavity 11 of the housing. The sealing ring 23 of the middle plate assembly is wound around the edge of the middle plate 21, and the sealing ring 23 is located between the middle plate 21 and the inner wall of the main body in the housing. The adjusting rod is threadedly connected to the mounting end 14 of the housing. One end of the adjusting rod is connected to the middle plate 21, and the other end of the adjusting rod penetrates through the mounting end 14. The adjusting rod drives the middle plate assembly to slide between one side of the accommodating cavity 11 close to the open end 13 and one side of the accommodating cavity 11 close to the mounting end 14. Thus, when the middle plate 21 of the middle plate assembly is driven by the rotation of the adjusting rod to approach the open end 13, the volume of the cavity on the side of the middle plate 21 close to the open end 13 inside the housing will decrease, the working space becomes smaller, and the suction force will be smaller at this time. When the middle plate 21 of the middle plate assembly is driven by the rotation of the adjusting rod to approach the mounting end 14, the volume of the cavity on the side of the middle plate 21 close to the open end 13 inside the housing will increase, the working space becomes larger, and the suction force will be larger at this time. It is possible to adjust the size of the volume of the cavity inside the suction bowl, and the suction force of the suction bowl can be adjusted. Subsequently, the volume of the internal space of the suction bowl can be adjusted, and the suction force of the suction bowl can be adjusted. Thus, the technical effect that the volume of the suction bowl can be freely distributed and the suction force can be adjusted is achieved.

[0052] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A suction bowl structure for a breast pump, characterized in that, The structure includes: a housing and an adjusting mechanism. The housing includes a body having a receiving cavity, an open end and a mounting end respectively communicating with the receiving cavity. The adjusting mechanism includes a middle plate assembly movably clamped in the receiving cavity and an adjusting rod. The middle plate assembly includes a middle plate and a sealing ring wound around the edge of the middle plate. The sealing ring is located between the middle plate and the inner wall of the body. The adjusting rod is threadedly connected to the mounting end. One end of the adjusting rod is connected to the middle plate, and the other end of the adjusting rod penetrates through the mounting end. The adjusting rod drives the middle plate assembly to slide between one side of the receiving cavity close to the open end and one side of the receiving cavity close to the mounting end. The body includes: a top housing and a bottom housing. The open end is provided on the top housing. The bottom housing is connected to the top housing, and the bottom housing and the top housing enclose to form the receiving cavity. The adjusting mechanism further includes: a set screw. One end of the set screw is connected to the middle plate, and the other end of the set screw is connected to one end of the adjusting rod. The adjusting mechanism further includes: a limit washer. The limit washer is mounted on the middle plate and is connected to one end of the set screw. The structure further includes: a silica gel diaphragm. The silica gel diaphragm is provided on the inner wall of the body and is located between the open end and the middle plate. The open end is used to communicate with the three-way cup of the breast pump.

2. The suction bowl structure for a breast pump according to claim 1, characterized in that, The structure further includes: an elastic member. One end of the elastic member is connected to the bottom housing, and the other end of the elastic member is connected to the middle plate. The elastic member is located in the receiving cavity.

3. The suction bowl structure for a breast pump according to claim 2, characterized in that, The elastic member includes: a first return spring, a second return spring and a third return spring. One end of the first return spring is connected to the bottom housing, and the other end of the first return spring is connected to the middle plate. One end of the second return spring is connected to the bottom housing, and the other end of the second return spring is connected to the middle plate. One end of the third return spring is connected to the bottom housing, and the other end of the third return spring is connected to the middle plate. The first return spring, the second return spring and the third return spring are distributed in a three-tower shape.

4. The suction bowl structure for a breast pump according to claim 1, characterized in that, The adjusting rod includes: an adjusting knob and a threaded rod. The threaded rod is threadedly connected to the mounting end. One end of the threaded rod is connected to the middle plate, and the other end of the threaded rod penetrates through the mounting end and is connected to the adjusting knob. The mounting end is provided with a threaded hole through which the threaded rod can pass and is screwed with the threaded rod.

5. The suction bowl structure for a breast pump according to claim 1, characterized in that, The structure further includes: one side of the sealing ring is in a T-shaped groove, and the edge of the middle plate matches the T-shaped groove. The edge of the middle plate is embedded in the T-shaped groove.

6. The suction bowl structure for a breast pump according to claim 1, characterized in that, The structure further includes: a stopper fixed on the inner wall of the body and used to stop the middle plate.

7. A device for a breast pump, comprising a three-way cup, characterized in that, It further includes the suction bowl structure for a breast pump according to any one of claims 1 to 6. The three-way cup is communicated with the open end.

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