Micro-vibration pump for breast pump

Abstract

The utility model provides a micro-vibration pump for a breast pump. The micro-vibration pump comprises a driving device, an elastic film and a sealing cover, the driving device comprises a telescopic rod capable of reciprocating in the rod shaft direction. The sealing cover comprises an inner accommodating cavity; an airflow output port and a negative pressure port are formed in the sealing cover; the internal accommodating cavity is only provided with an airflow output port and a negative pressure port which are communicated with the outside; the negative pressure opening is wrapped with an elastic film in a sealed mode. The elastic film is fixedly connected with the rod end of the telescopic rod; the rod end of the telescopic rod can move back and forth inside and outside the containing cavity space of the sealing cover. The elastic film has two states of a first cover shape and a second cover shape; the first cover shape and the second cover shape are both in a cover body shape. The elastic film comprises two deformation threshold values, and when the elastic film deforms to the two deformation threshold values, the elastic film instantly moves and is converted into a first cover shape state or a second cover shape state. The problem that the suction pump and the vibration device are needed to achieve the two different functions of breast pumping and vibration of the breast pump is solved, and vibration can be generated while the suction pump function is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air pumps, in particular to a micro-vibration pump used for a breast pump. Background Art

[0002] A breast pump is a tool used to squeeze out breast milk accumulated in the mammary gland. Breast pumps on the market use a relatively high-frequency, low-suction air pump to stimulate breast milk secretion through high-frequency and gentle suction, and vibrate the bell mouth to massage the breasts, stimulate mammary gland secretion, and improve the effect of milk suction; however, the vibration of the bell mouth usually requires an independent vibration mechanism to drive it, so existing breast pumps with vibration function usually require two independent driving mechanisms to drive them.

[0003] In the prior art, there is a negative pressure pump for a breast pump that can generate micro-vibrations, such as the one disclosed in Chinese patent application No. 202211237672.5, which allows the air driven by the pump to pass through a rotatable impeller, and then uses the rotation of the impeller to drive a striking rod to hit the speaker cover to generate vibrations; this can reduce a separate driving mechanism with a vibration function and reduce the production cost of a breast pump with a vibration function; however, its impeller, eccentric wheel, connecting rod, striking rod and other structures and their mutual active connection methods make its structure complicated, the striking rod structure still has to act on the cover body, and its production and assembly costs are high, and the complex structure is also prone to failure during use. Utility Model Content

[0004] In view of the above technical problems, the utility model provides a micro-vibration pump for a breast pump, which has a simple structure and can generate vibration while performing a suction pump function.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The micro-vibration pump for a breast pump provided by the utility model comprises a driving device, an elastic membrane and a sealing cover; the driving device comprises a telescopic rod that can reciprocate along the rod axis direction; the sealing cover comprises an internal cavity; an airflow outlet and a negative pressure outlet are provided on the sealing cover; the internal cavity has and only has the airflow outlet and the negative pressure outlet in communication with the outside; the negative pressure outlet is sealed and covered with the elastic membrane; the elastic membrane is fixedly connected to the rod end of the telescopic rod; the rod end of the telescopic rod can reciprocate inside and outside the cavity space of the sealing cover; the elastic membrane comprises two states of a first cover shape and a second cover shape; the first cover shape and the second cover shape are both cover body forms; The elastic membrane includes two deformation thresholds. When the elastic membrane is deformed to the two deformation thresholds, the elastic membrane will produce an instantaneous motion and convert into the first cover shape or the second cover shape respectively; during the extension and retraction process, the telescopic rod will drive the elastic membrane to change its shape to two deformation thresholds; the elastic membrane includes a first cover surface and a second cover surface; the second cover surface faces the internal volume of the sealing cover; when the first cover shape is used, the first cover surface is the inner wall surface of the cover body of the elastic membrane, and the second cover surface is the outer wall surface of the cover body of the elastic membrane; when the second cover shape is used, the first cover surface is the outer wall surface of the cover body of the elastic membrane, and the second cover surface is the inner wall surface of the cover body of the elastic membrane.

[0007] The micro-vibration pump for a breast pump provided by the utility model, preferably, the driving device includes a spring that can be extended and retracted along the axis direction of the telescopic rod; one end of the spring is fixed to the telescopic rod; the other end of the spring is fixed to the center of the cover body of the elastic membrane through a connecting piece.

[0008] The micro-vibration pump for a breast pump provided by the utility model, preferably, the driving device also includes a motor, a cam and a limiting tube; the cam is fixed on the output shaft of the motor; a supporting plate is provided at the bottom of the telescopic rod; the supporting plate has a supporting plane; the supporting plane is arranged to be in contact with the cam; the cam always remains tangent to the supporting plane during rotation; the plate surface area of ​​the supporting plate is larger than the tube hole area of ​​the limiting tube; the plate surface of the supporting plate is perpendicular to the tube axis of the limiting tube; the telescopic rod can be slidably fixed in the limiting tube; the diameter of the telescopic rod is the same as the tube diameter length of the limiting tube; both ends of the telescopic rod extend out of the tube openings at both ends of the limiting tube.

[0009] The micro-vibration pump for a breast pump provided by the utility model is preferably provided with a plurality of compression springs between the abutment plate and the limiting tube; and the expansion and contraction direction of the compression springs is parallel to the moving direction of the expansion and contraction rod.

[0010] The above technical solution has the following advantages or beneficial effects:

[0011] The utility model provides a micro-vibration pump for a breast pump, which relates to the technical field of air pumps, and comprises a driving device, an elastic membrane and a sealing cover; the driving device comprises a telescopic rod that can reciprocate along the rod axis direction; the sealing cover comprises an internal cavity; an airflow outlet and a negative pressure outlet are provided on the sealing cover; the internal cavity has and only has the airflow outlet and the negative pressure outlet connected to the outside; the negative pressure outlet is sealed and covered with the elastic membrane; the elastic membrane is fixedly connected to the rod end of the telescopic rod; the rod end of the telescopic rod can reciprocate inside and outside the cavity space of the sealing cover; the elastic membrane comprises two states of a first cover shape and a second cover shape; both the first cover shape and the second cover shape are It is a cover shape; the elastic membrane includes two deformation thresholds, when the elastic membrane is deformed to the two deformation thresholds, the elastic membrane will produce an instantaneous motion and convert into the first cover shape or the second cover shape respectively; during the telescopic process, the telescopic rod will drive the elastic membrane to change its shape to two deformation thresholds; the elastic membrane includes a first cover surface and a second cover surface; the second cover surface faces the internal volume of the sealing cover; when the first cover shape is used, the first cover surface is the inner wall surface of the cover of the elastic membrane, and the second cover surface is the outer wall surface of the cover of the elastic membrane; when the second cover shape is used, the first cover surface is the outer wall surface of the cover of the elastic membrane, and the second cover surface is the inner wall surface of the cover of the elastic membrane. The micro-vibration pump for a breast pump provided by the utility model solves the problem in the prior art that a suction pump and a vibration device are needed to solve the two different functions of the breast pump, namely, sucking milk and vibrating, respectively, and can generate vibration while playing the suction pump function. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, but the emphasis is on illustrating the subject matter of the present invention.

[0013] Figure 1 It is a schematic structural diagram of the elastic membrane of the micro-vibration pump for a breast pump provided in Example 1 of the utility model when it is in a first cover shape.

[0014] Figure 2 It is a schematic structural diagram of the elastic membrane of the micro-vibration pump for a breast pump provided in Example 1 of the utility model when it is in the second cover shape. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention are described below in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the protection scope of the present invention.

[0016] Embodiment 1: In the prior art, in order to realize simultaneous massage of the mother's breasts while the mother is sucking milk, two independent driving devices are required to drive the vibration module and the breast suction module respectively, and an independent vibration structure is required to be specially provided so that the mother's breast can feel the vibration, which will result in a complex structure of the breast pump with a vibration function and high production cost. The micro-vibration pump for a breast pump provided in Embodiment 1 of the utility model is as follows: Figure 1 to Figure 2 As shown, it includes a driving device 1, an elastic membrane 2 and a sealing cover 3; the driving device 1 includes a telescopic rod 11 that can reciprocate along the rod axis direction; the sealing cover 3 includes an internal cavity; an airflow outlet 31 and a negative pressure outlet 32 ​​are provided on the sealing cover 3; the internal cavity has and only has the airflow outlet 31 and the negative pressure outlet 32 ​​connected to the outside; the negative pressure outlet 32 ​​is sealed and covered with an elastic membrane 2; the elastic membrane 2 is fixedly connected to the rod end of the telescopic rod 11; the rod end of the telescopic rod 11 can move back and forth in and out of the cavity space of the sealing cover 3; the elastic membrane 2 includes two states of a first cover shape and a second cover shape; the first cover shape and the second cover shape are both cover body forms; the elastic membrane It includes two deformation thresholds. When the elastic membrane 2 is deformed to the two deformation thresholds, the elastic membrane 2 will produce an instantaneous motion and convert into the first cover shape or the second cover shape respectively; during the extension and retraction process, the telescopic rod 11 will drive the elastic membrane 2 to change its shape to the two deformation thresholds; the elastic membrane 2 includes a first cover surface 21 and a second cover surface 22; the second cover surface 22 faces the internal cavity of the sealing cover 3; in the first cover shape, the first cover surface 21 is the inner wall surface of the cover of the elastic membrane 2, and the second cover surface is the outer wall surface of the cover of the elastic membrane 2; in the second cover shape, the first cover surface 21 is the outer wall surface of the cover of the elastic membrane 2, and the second cover surface 22 is the inner wall surface of the cover of the elastic membrane 2.

[0017] The micro-vibration pump for a breast pump provided in Example 1 of the utility model is used as an accessory of a breast pump host when in use. The breast shield of the breast pump is placed against the mother's breast, and the negative pressure port of the breast shield of the breast pump is connected to the air flow outlet 31 of the sealing cover 3 in the breast pump host. The air flow outlet 31 circulates air extraction and suction to achieve the change of air pressure at the negative pressure part of the breast shield. The difference from the common suction pump is that the negative pressure airflow generated from the air flow outlet 31 will produce a vibration effect, and the negative pressure of the vibration effect will suck the negative pressure end of the breast shield, so that the airflow part that provides suction to the breast is also in the form of vibration, so that the part of the breast shield that is placed against the mother's breast will be slightly vibrated due to the vibrating airflow, thereby achieving a massage effect.

[0018] The principle of generating negative pressure airflow with vibration effect is to use the telescopic rod 11 of the driving device 1 to change the state of the elastic membrane 2 at a uniform and slow speed. Specifically, when the telescopic rod 11 moves to the deformation threshold of the elastic membrane 2 during the slow telescopic movement, the elastic membrane 2 is caused to produce an instantaneous motion, and the elastic membrane produces an instantaneous deformation change. The speed of this instantaneous deformation change is very fast, and the instantaneous change of the elastic membrane 2 will cause the space in the internal cavity of the sealing cover 3 to be instantly reduced or instantly enlarged. The instantaneous change of the space size will instantly squeeze the air in the cavity of the sealing cover 3. The telescopic rod 11 is used to push the elastic membrane 2 to change the space inside the sealing cover 3, which is slower than the instantaneous deformation of the elastic membrane 2. When the elastic membrane 2 is deformed instantaneously, the space inside the sealing cover 3 changes. When it is necessary to provide suction to the mother's breast, the telescopic rod 11 is retracted, and the telescopic rod 11 drives the elastic membrane 2 to deform, so that the elastic membrane 2 is separated from the first cover shape, and the elastic membrane is driven to separate from the cavity of the sealing cover 3 until the elastic membrane 2 reaches the shape of the elastic membrane 2. The threshold value changes, and the first cover surface 21 instantly protrudes into the outer wall surface of the elastic membrane 2 cover body, and the second cover surface 22 is the inner wall surface of the elastic membrane 2 cover body, and the elastic membrane 2 is in the second cover shape state; during the whole process, the air volume in the sealing cover 3 increases due to the protrusion of the elastic membrane 2, and this part of the air is provided by the negative pressure end of the breast shield connected to the pipeline, and the air volume at the negative pressure end of the breast shield decreases, so that the breast shield can generate negative pressure to generate suction on the breast, and during the period when the elastic membrane 2 is instantly transformed into the second cover shape, the negative pressure end of the breast shield can produce rapid spatial changes, and this instantaneous spatial change is in contrast to the slow spatial change driven only by the telescopic rod 11, so that the negative pressure airflow can present a sometimes fast and sometimes slow effect when the breast is sucked, and the sometimes fast and sometimes slow airflow forms a vibration effect; compared with the breast pump in the prior art that needs to be separately provided with a vibration structure, the device structure of this embodiment is simple and the probability of failure is small; since no additional vibration device and a driving mechanism for driving the vibration device are required, only the device of this embodiment can achieve the suction and vibration effects at the same time, so the production cost is low.

[0019] In order to prevent the connection between the telescopic rod 11 and the elastic membrane 2 from hindering the elastic membrane 2 from performing instantaneous deformation at the deformation threshold, in this embodiment, the driving device 1 includes a spring 12 that can be extended and retracted along the axis of the telescopic rod; one end of the spring 12 is fixed to the telescopic rod 11; the other end of the spring 12 is fixed to the center of the cover of the elastic membrane 2 through a connecting piece 13. The telescopic rod 11 is fixed to the elastic membrane 2 through the spring 12 and the connecting piece 13 fixed to the other end of the spring 12, so that after the elastic membrane 2 generates an instantaneous deformation, the spring 12 can be contracted to avoid being directly blocked by the telescopic rod 11 to affect the deformation process, so that the elastic membrane 2 can smoothly complete the deformation.

[0020] There are many structures in the prior art that enable the telescopic rod 11 to perform telescopic movement. As a preferred solution, in the present embodiment, the driving device 1 also includes a motor 14, a cam 15 and a limiting tube 16; the cam 15 is fixed on the output shaft of the motor 14; a supporting plate 111 is provided at the bottom of the telescopic rod 11; the supporting plate 111 has a supporting plane; the supporting plane is arranged in contact with the cam 15; the cam 15 always remains tangent to the supporting plane during the rotation process; the plate surface area of ​​the supporting plate 111 is larger than the tube hole area of ​​the limiting tube 16; the plate surface of the supporting plate 111 is perpendicular to the tube axis of the limiting tube 16; the telescopic rod 11 can be slidably fixed in the limiting tube 16; the diameter of the telescopic rod 11 is the same as the tube diameter length of the limiting tube 16; both ends of the telescopic rod 11 extend out of the tube openings at both ends of the limiting tube 16. The output shaft of the motor 14 will rotate when working, and the rotation of the output shaft drives the rotation of the cam 15. The axial distance from the rim of the cam 15 to the output shaft is not equal. Since the cam 15 must always remain tangent to the abutment surface of the abutment plate 111, the distance between the axis of the output shaft and the abutment plate 111 will change with the rotation of the cam 15. Since the axial position of the output shaft of the motor 14 is fixed, the position of the abutment plate 111 will change relative to the position of the output shaft of the motor 14. The abutment plate 111 is the bottom structure of the telescopic rod 11, so the telescopic rod 11 can move. Since the limiting tube 16 limits the axial position of the telescopic rod 11, when the position of the abutment plate 111 changes, the telescopic rod 11 changes position along the axis of the limiting tube 16, specifically, the telescopic rod 11 moves telescopically in the limiting tube 16.

[0021] In order to ensure that the abutment plate 111 and the cam 15 are kept tangent, in this embodiment, a plurality of compression springs 17 are arranged between the abutment plate 111 and the limiting tube 16; the expansion and contraction direction of the compression spring 17 is consistent with the moving direction of the telescopic rod 11. During the rotation of the cam 15, the position between the abutment plate 111 and the limiting tube 16 will change, and the function of the compression spring 17 is to give the abutment plate 111 a squeezing force from the limiting tube 16 in the direction of the cam, so as to keep the abutment surface of the abutment plate 111 in close contact with the wheel rim of the cam 15 (wherein the axis positions of the limiting tube 16 and the cam 15 are fixed).

[0022] In summary, the utility model provides a micro-vibration pump for a breast pump, which relates to the technical field of air pumps, and includes a driving device, an elastic membrane and a sealing cover; the driving device includes a telescopic rod that can reciprocate along the rod axis direction; the sealing cover includes an internal cavity; an airflow outlet and a negative pressure port are provided on the sealing cover; the internal cavity has and only has the airflow outlet and the negative pressure port connected to the outside; the negative pressure port is sealed and covered with the elastic membrane; the elastic membrane is fixedly connected to the rod end of the telescopic rod; the rod end of the telescopic rod can move back and forth in and out of the cavity space of the sealing cover; the elastic membrane includes two states of a first cover shape and a second cover shape; the first cover shape and the second cover shape The shapes are all cover shapes; the elastic membrane includes two deformation thresholds, when the elastic membrane is deformed to the two deformation thresholds, the elastic membrane will produce instantaneous motion and convert into the first cover shape or the second cover shape respectively; the telescopic rod will drive the elastic membrane shape to change to two deformation thresholds during the telescopic process; the elastic membrane includes a first cover surface and a second cover surface; the second cover surface faces the internal volume of the sealing cover; when the first cover shape is used, the first cover surface is the inner wall surface of the cover of the elastic membrane, and the second cover surface is the outer wall surface of the cover of the elastic membrane; when the second cover shape is used, the first cover surface is the outer wall surface of the cover of the elastic membrane, and the second cover surface is the inner wall surface of the cover of the elastic membrane. The micro-vibration pump for a breast pump provided by the utility model solves the problem in the prior art that a suction pump and a vibration device are needed to respectively solve the two different functions of the breast pump, namely, sucking milk and vibrating, and can generate vibration while playing the suction pump function.

[0023] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A micro-vibration pump for a breast pump, characterized in that: It includes a driving device, an elastic membrane and a sealing cover; The driving device comprises a telescopic rod that can reciprocate along the rod axis direction; The sealing cover includes an internal cavity; The sealing cover is provided with an air flow outlet and a negative pressure outlet; The internal cavity has and only has the airflow outlet and the negative pressure outlet connected to the outside; The negative pressure port is sealed and covered with the elastic film; the elastic film is fixedly connected to the rod end of the telescopic rod; the rod end of the telescopic rod can move back and forth in and out of the cavity space of the sealing cover; The elastic membrane includes two states: a first cover shape and a second cover shape; the first cover shape and the second cover shape are both cover body forms; the elastic membrane includes two deformation thresholds, and when the elastic membrane is deformed to the two deformation thresholds, the elastic membrane will produce an instantaneous motion and be converted into the first cover shape or the second cover shape respectively; During the extension and retraction process, the telescopic rod will drive the elastic membrane to change its shape to two deformation thresholds; The elastic membrane comprises a first cover surface and a second cover surface; the second cover surface faces the inner cavity of the sealing cover; When the first cover shape is used, the first cover surface is the inner wall surface of the cover of the elastic membrane, and the second cover surface is the outer wall surface of the cover of the elastic membrane; In the second cover shape, the first cover surface is the outer wall surface of the cover of the elastic membrane, and the second cover surface is the inner wall surface of the cover of the elastic membrane.

2. The micro-vibration pump for a breast pump according to claim 1, characterized in that: The driving device comprises a spring which can be extended and retracted along the axis direction of the telescopic rod; one end of the spring is fixed on the telescopic rod; and the other end of the spring is fixed to the center of the cover body of the elastic membrane through a connecting piece.

3. The micro-vibration pump for a breast pump according to claim 1, characterized in that: The driving device also includes a motor, a cam and a limit tube; The cam is fixed on the output shaft of the motor; a contact plate is provided at the bottom of the telescopic rod; the contact plate has a contact plane; the contact plane is arranged to contact the cam; the cam always remains tangent to the contact plane during the rotation process; The surface area of ​​the abutment plate is larger than the tube hole area of ​​the limiting tube; the surface of the abutment plate is perpendicular to the tube axis of the limiting tube; The telescopic rod can be slidably fixed in the limiting tube; the diameter of the telescopic rod is the same as the diameter of the limiting tube; both ends of the telescopic rod extend out of the two end tube openings of the limiting tube.

4. The micro-vibration pump for a breast pump according to claim 3, characterized in that: A plurality of compression springs are arranged between the abutment plate and the limiting tube; the expansion and contraction direction of the compression springs is parallel to the moving direction of the expansion and contraction rod.

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