CN111346268A - Single-air pump double-channel breast pump - Google Patents

Abstract

The invention relates to the field of mother and infant articles, in particular to a breast pump. A single-air pump dual-channel breast pump comprises an air channel steering valve, wherein the air channel steering valve comprises a negative pressure port, a first feeding bottle interface, a second feeding bottle interface, a driving device and a valve core assembly; the first feeding bottle interface is communicated to the negative pressure port through a first suction air channel in the air channel steering valve to form a first air channel; the second feeding bottle port is communicated to the negative pressure port through a second suction air channel in the air channel steering valve to form a second air channel; the first air passage is connected with the second air passage in parallel, and the driving device controls the action of the valve core assembly to enable the air passage steering valve to alternately open the first air passage or the second air passage. The air path steering valve is simultaneously connected with the milk suction bottle assembly and switches the air path, and the air pump can be used for alternately providing negative pressure for the single milk suction bottle assembly under the control of the motor of the air path steering valve, so that the requirement on the power of the air pump is not additionally increased, and the requirement on the comfort of alternate milk suction is met.

Description

Single air pump dual channel breast pump

technical field

The invention relates to the field of maternal and infant products, in particular to a breast pump.

Background technique

An electric breast pump usually consists of a negative pressure source and a sucking bottle assembly. The negative pressure source acts on the sucking bottle assembly by generating negative pressure and simulating the sucking action of the baby to achieve breastfeeding; this breastfeeding method takes into account the impact on the human body. It is usually not suitable for continuous operation, so the efficiency of unilateral breast pumping is low, and it is necessary to continuously adjust the left and right sides manually to achieve continuous breast pumping, which not only brings trouble to users, but also has low efficiency. .

Therefore, there is also a bilateral breast pumping device in the prior art. For example, Chinese patent CN103691015B discloses a positive and negative pressure breast pump for imitating sucking, which includes a breast cup, a three-way suction device, an air pump and a control part. It also includes a single bilateral converter; the control part is composed of a solenoid valve 1 and a solenoid valve 2, and one end of the solenoid valve 1 is communicated with one end of the solenoid valve 2 and the air inlet of the single bilateral converter, so The other end of the solenoid valve 1 is communicated with the negative pressure pipeline of the air pump, and the other end of the solenoid valve 2 is communicated with the positive pressure pipeline of the air pump; the control of the suction state is realized by the solenoid valve 1 and the solenoid valve 2. From the description of the patent, we can see that there are only two modes of breast pumping on both sides of the existing bilateral breast pump. Open both sides of the pump, but both sides are working simultaneously. This working mode will bring some problems; 1. When a single air pump drives two-way pumping at the same time, it will increase the burden of the air pump, either increasing the power of the air pump to increase the cost and noise, or insufficient suction pressure; 2. Simultaneous bilateral pumping It does not meet the requirements of interval suction to reduce the pressure on the human body, and the use of control circuit interval suction will cause the current shock caused by the frequent start and stop of the air pump motor, which also has certain damage to the electronic control system.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a single-air pump dual-path breast pump, which is simultaneously connected to a pair of milk bottle assemblies through an air-path steering valve that can be switched on and off in the dual air paths, and adopts an air pump. It can alternately provide negative pressure to a single milk bottle assembly under the control of the motor of the air circuit steering valve, without additional requirements for the power of the air pump, and at the same time, it can meet the comfort requirements of alternate milking, and at the same time, it can play an intermittent air pressure. Simulate the effect of massage; in addition, the entire circuit is controlled by the cam drive mechanism to achieve alternate intermittent suction of reciprocating motion, and the current is stable without impact, which solves the defect of the prior art that the frequent start and stop of the air pump motor affects the service life of the air pump.

The present invention is realized as follows: a single-air pump dual-channel breast pump, comprising an air pump, an air-path steering valve and a pair of sucking bottle assemblies, the air pump is communicated with the sucking bottle assemblies through the air-path steering valve, and the air circuit The steering valve includes a negative pressure port, a first feeding bottle interface, a second feeding bottle interface, a driving device and a valve core assembly;

The first feeding bottle interface is connected to the negative pressure port through the first suction air passage in the air passage diverting valve to form a first air passage; the second feeding bottle interface is communicated through the second suction air passage in the air passage diverting valve to the negative pressure port to form the second air path;

The first air passage is connected in parallel with the second air passage, and the driving device controls the valve core assembly to act so that the air passage steering valve alternately opens the first air passage or the second air passage.

The driving device controls the action of the valve core assembly so that the air path steering valve has two states of the first air path suction and the second air path suction,

The suction state of the first air passage is that the first suction air passage is open and the second suction air passage is closed, so that the negative pressure port is communicated with the first feeding bottle interface, and the negative pressure port and the second feeding bottle interface are closed;

The suction state of the second air passage is that the second suction air passage is open and the first suction air passage is closed, so that the negative pressure port is communicated with the second feeding bottle interface, and the negative pressure port and the first feeding bottle interface are closed.

The air path steering valve is also provided with a first pressure relief port that communicates with the first air path; the first pressure relief port is closed when the first air path is opened, and the first pressure relief port is closed when the first air path is closed Open.

The air path steering valve is also provided with a second pressure relief port that communicates with the second air path; the second pressure relief port is closed when the second air path is opened, and the second pressure relief port is closed when the second air path is closed Open.

The driving device is a cam transmission mechanism formed by a motor driving a cam.

The valve core assembly includes a lower fixing frame, a supporting frame, an upper fixing frame and a reversing link. The supporting frame is fixedly installed in the air circuit steering valve through the lower fixing frame and the upper fixing frame, and the reversing link is set A moving pair is formed in the support frame and cooperates with the support frame. The cam drives the reversing link to move under the guidance of the support frame through the driving rod; The valve core for the on-off of the second gas path.

A sealing ring is also arranged at the joint of the lower fixing frame, the supporting frame and the upper fixing frame.

A guide chute is arranged on the cam, one end of the drive rod is arranged in the guide chute, and the other end of the drive rod is connected with the reversing link.

The bidirectional sealing ring is a bidirectional sealing ring.

The valve core assembly includes a support frame, a swing arm frame, a swing arm and a pair of plunger rods, the support frame and the swing arm frame are fixedly installed in the air circuit steering valve, and the middle part of the swing arm is hinged on the swing arm frame , a pair of the plunger rods are symmetrically connected to the two ends of the swing arm, and the cam drives the swing arm to reciprocate through the drive rod; The valve core matched with the road.

A guide chute is arranged on the cam, one end of the driving rod is arranged in the guide chute, and the other end is connected with the swing arm.

The valve core is a bidirectional sealing ring.

The single-air pump dual-path breast pump of the present invention is simultaneously connected to a pair of milk bottle assemblies through an air-path steering valve that can switch on and off in the dual air paths, and a single air pump can be used to alternately pair a single pump under the control of the motor of the air-path steering valve. The milk bottle assembly provides negative pressure, which does not increase the power requirements of the air pump, and also meets the comfort requirements of alternate breast pumping. The pressure relief of one side of the air circuit further improves the comfort of the overall breast pumping process, plays the effect of intermittent air pressure simulation massage, and simplifies the pressure relief structure of the milk bottle assembly, realizing the integrated on the air circuit reversing valve. The linked pressure relief function reduces costs.

Description of drawings

1 is a schematic structural diagram of an existing bilateral breast pump;

2 is a schematic structural diagram of a single-air pump dual-channel breast pump of the present invention;

FIG. 3 is an enlarged schematic view of the gas path steering valve in Embodiment 1 of the present invention;

4 is an exploded view of the parts of the valve core assembly in Embodiment 1 of the present invention;

Fig. 5 is the transmission schematic diagram of the cam in Embodiment 1 of the present invention;

FIG. 6 is an enlarged schematic view of the gas path steering valve in Embodiment 2 of the present invention;

7 is an exploded view of the parts of the valve core assembly in Embodiment 2 of the present invention;

Fig. 8 is the transmission schematic diagram of the cam in Embodiment 2 of the present invention;

9 is a schematic diagram of the air path communication in the suction state of the first air path in the embodiment of the present invention;

10 is a schematic diagram of the air path communication in the suction state of the second air path in the embodiment of the present invention;

The solid lines in FIGS. 9 and 10 indicate that the air passages are connected, and the broken lines indicate that the air passages are disconnected.

In the figure: 1 air pump, 2 air way steering valve, 3 milk bottle assembly, 21 negative pressure port, 22 first pressure relief port, 23 first milk bottle port, 24 second pressure relief port, 25 second milk bottle port, 26 drive device, 27 control valve core assembly, 28 first suction air path, 29 second suction air path, 261 motor, 262 cam, 263 drive rod, 264 chute, 271 lower fixing frame, 272 supporting frame, 273 upper fixing Frame, 274 reversing link, 275 valve core, 276 sealing ring, 277 swing arm frame, 278 swing arm, 279 plunger rod.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Example 1

As shown in FIG. 2 , a single-air pump double-channel breast pump includes an air pump 1 , an air-path steering valve 2 and a pair of milk bottle assemblies 3 , the air pump 1 is connected to the milk bottle assembly 3 through the air-path steering valve 2 , when in use, the air path is switched by the air path steering valve 2, so that the negative pressure generated by the air pump 1 acts on one of the pair of milk bottle assemblies 3 to meet the requirements of milk pumping.

As shown in FIG. 3 , the air circuit steering valve 2 includes a negative pressure port 21 , a first feeding bottle interface 23 , a second feeding bottle interface 25 , a driving device 26 and a valve core assembly 27 ; the first feeding bottle interface 23 passes through the air circuit The first suction air passage 28 in the steering valve 2 is connected to the negative pressure port 21 to form a first air passage; the second feeding bottle interface 25 is connected to the negative pressure through the second suction air passage 29 in the air passage steering valve 2 The port 21 constitutes a second air path; the first air path is connected in parallel with the second air path, and the driving device 26 controls the valve core assembly 27 to act so that the air path steering valve 2 alternately opens the first air path or the second air path.

During operation, the driving device 26 switches the negative pressure port 21 to one of the first feeding bottle interface 23 and the second feeding bottle interface 25 through the action of the valve core assembly 27; when the operation is completed, the driving device 26 controls the valve core assembly The action of 27 makes the air path steering valve 2 have two states of the first air path suction and the second air path suction,

The suction state of the first air passage is that the first suction air passage 28 is opened and the second suction air passage 29 is closed, so that the negative pressure port 21 is communicated with the first feeding bottle interface 23, and the negative pressure port 21 is connected with the second feeding bottle interface. 25 close;

The suction state of the second air passage is that the second suction air passage 29 is opened and the first suction air passage 28 is closed, so that the negative pressure port 21 is communicated with the second feeding bottle interface 25, and the negative pressure port 21 is connected with the first feeding bottle interface. 23 closes.

In the present invention, in order to improve comfort, simplify the exhaust structure on the milk bottle assembly 3, and reduce costs, the pressure relief linkage is directly realized through the air path reversing valve, and the air path reversing valve 2 is also provided with a first air path reversing valve. The first pressure relief port 22 communicated with the air path, the air path steering valve 2 is also provided with a second pressure relief port 24 communicated with the second air path;

At this time, when performing dual-air alternate pumping:

As shown in FIG. 9 , the suction state of the first air passage is that the negative pressure port 21 and the first feeding bottle interface 23 are communicated through the first suction air passage 28 , and the first pressure relief port 22 is connected to the first feeding port 23 . The bottle interface 23 is disconnected; at the same time, the second suction air path 29 between the negative pressure port 21 and the second bottle interface 25 is disconnected, and the second pressure relief port 24 and the second bottle interface 25 are connected to leak pressure;

As shown in FIG. 10 , the suction state of the second air path is that the negative pressure port 21 and the second feeding bottle interface 25 are communicated through the second suction air path 29 , and the second pressure relief port 24 is connected to the second feeding port 25 . The bottle interface 25 is disconnected; at the same time, the first suction air path 28 between the negative pressure port 21 and the first bottle interface 23 is disconnected, and the first pressure relief port 22 and the first bottle interface 23 are connected to leak pressure.

Preferably, in order to avoid frequent reversal of the motor in the driving device 26 to affect the service life during operation, the driving device 26 is a cam transmission mechanism formed by the motor 261 driving the cam 262 .

As shown in FIGS. 3 , 4 and 5 , in this embodiment, the valve core assembly 27 includes a lower fixing frame 271 , a supporting frame 272 , an upper fixing frame 273 and a reversing link 274 , and the supporting frame 272 passes through the lower fixing frame 272 . The fixing frame 271 and the upper fixing frame 273 are fixedly installed in the air circuit steering valve 2 , the reversing link 274 is arranged in the supporting frame 272 and cooperates with the supporting frame 272 to form a moving pair, and the cam 262 passes through the driving rod 263 The reversing link 274 is driven to move under the guidance of the support frame 272; the reversing link 274 is fixedly equipped with a valve core 275 for controlling the on-off of the first gas path and the second gas path; in this embodiment, as Preferably, the valve core 275 is a bidirectional sealing ring.

In order to ensure the airtightness of the air path inside the air path steering valve 2 , a sealing ring 276 is also provided at the joints of the lower fixing frame 271 , the supporting frame 272 , and the upper fixing frame 273 .

The present invention can be further described as a guide chute 264 on the cam 262 , one end of the drive rod 263 is set in the guide chute 264 , and the other end of the drive rod 263 is connected with the reversing link 274 .

Example 2

As shown in FIGS. 6 , 7 and 8 , a single air pump and double passage breast pump, the difference between Embodiment 2 and Embodiment 1 is that the valve core assembly 27 includes a support frame 272 , a swing arm frame 277 , and a swing arm 278 and a pair of plunger rods 279, the support frame 272 and the swing arm frame 277 are fixedly installed in the air path steering valve 2, the middle of the swing arm 278 is hinged on the swing arm frame 277, and a pair of the plunger rods 279 Symmetrically connected to the two ends of the swing arm 278, the cam 262 drives the swing arm 278 to reciprocate through the drive rod 263; a pair of the plunger rods 279 are respectively provided with a pair of the first air path and the second air path. In this embodiment, preferably, the valve core 275 is a bidirectional sealing ring.

The present invention can be further described as a guide chute 264 on the cam 262 , one end of the driving rod 263 is set in the guide chute 264 , and the other end is connected with the swing arm 278 .

Claims (13)

1. The utility model provides a single air pump bi-pass breast pump, includes an air pump (1), an air circuit diverter valve (2) and a pair of feeding bottle subassembly (3) of inhaling, air pump (1) communicates through air circuit diverter valve (2) and inhales feeding bottle subassembly (3), characterized by: the air path steering valve (2) comprises a negative pressure port (21), a first feeding bottle interface (23), a second feeding bottle interface (25), a driving device (26) and a valve core assembly (27);

the first feeding bottle interface (23) is communicated to the negative pressure port (21) through a first suction air channel (28) in the air channel steering valve (2) to form a first air channel; the second feeding bottle connector (25) is communicated to the negative pressure port (21) through a second suction air channel (29) in the air channel steering valve (2) to form a second air channel;

the first air passage is connected with the second air passage in parallel, and the driving device (26) controls the valve core assembly (27) to act so that the air passage steering valve (2) can open the first air passage or the second air passage alternately.

2. The single-air-pump dual-channel breast pump of claim 1, wherein: the driving device (26) controls the valve core assembly (27) to act so that the air passage steering valve (2) has two states of first air passage suction and second air passage suction,

the first air channel is in a suction state that the first suction air channel (28) is opened and the second suction air channel (29) is closed, so that the negative pressure port (21) is communicated with the first feeding bottle connector (23), and the negative pressure port (21) is closed with the second feeding bottle connector (25);

the second air channel is in a suction state that the second suction air channel (29) is opened and the first suction air channel (28) is closed, so that the negative pressure port (21) is communicated with the second feeding bottle connector (25), and the negative pressure port (21) is closed with the first feeding bottle connector (23).

3. The single-air-pump dual-channel breast pump of claim 2, wherein: the gas circuit steering valve (2) is also provided with a first pressure relief opening (22) communicated with the first gas circuit; the first pressure relief opening (22) is closed when the first air path is open, and the first pressure relief opening (22) is open when the first air path is closed.

4. The single-air-pump dual-channel breast pump of claim 2, wherein: the gas path steering valve (2) is also provided with a second pressure relief opening (24) communicated with a second gas path; the second pressure relief opening (24) is closed when the second air path is opened, and the second pressure relief opening (24) is opened when the second air path is closed.

5. A single air pump dual pathway breast pump as claimed in any one of claims 1 to 4 wherein: the driving device (26) is a cam transmission mechanism formed by driving a cam (262) by a motor (261).

6. The single-air-pump dual-channel breast pump of claim 5, wherein: the valve core assembly (27) comprises a lower fixed frame (271), a support frame (272), an upper fixed frame (273) and a reversing link rod (274), the support frame (272) is fixedly installed in the gas path steering valve (2) through the lower fixed frame (271) and the upper fixed frame (273), the reversing link rod (274) is arranged in the support frame (272) and is matched with the support frame (272) to form a moving pair, and the cam (262) drives the reversing link rod (274) to move under the guidance of the support frame (272) through a driving rod (263); and a valve core (275) for controlling the connection and disconnection of the first air path and the second air path is fixedly arranged on the reversing link rod (274).

7. The single-air-pump dual-channel breast pump of claim 6, wherein: and a sealing ring (276) is further arranged at the joint of the lower fixing frame (271), the support frame (272) and the upper fixing frame (273).

8. The single-air-pump dual-channel breast pump of claim 6, wherein: the cam (262) is provided with a guide sliding groove (264), one end of the driving rod (263) is arranged in the guide sliding groove (264), and the other end of the driving rod (263) is connected with the reversing link rod (274).

9. The single-air-pump dual-channel breast pump of claim 6, wherein: the bidirectional sealing ring (275) is a bidirectional sealing ring.

10. The single-air-pump dual-channel breast pump of claim 5, wherein: the valve core assembly (27) comprises a support frame (272), a swing arm frame (277), a swing arm (278) and a pair of plunger rods (279), the support frame (272) and the swing arm frame (277) are fixedly installed in the gas circuit steering valve (2), the middle part of the swing arm (278) is hinged to the swing arm frame (277), the pair of plunger rods (279) are symmetrically connected to two ends of the swing arm (278), and the cam (262) drives the swing arm (278) to reciprocate through a drive rod (263); and valve cores (275) matched with the first air passage and the second air passage are respectively arranged on the pair of plunger rods (279).

11. The single-air-pump dual-channel breast pump of claim 10, wherein: and a sealing ring (276) is further arranged at the joint of the support frame (272) and the swing arm frame (277).

12. The single-air-pump dual-channel breast pump of claim 10, wherein: the cam (262) is provided with a guide sliding groove (264), one end of the driving rod (263) is arranged in the guide sliding groove (264), and the other end of the driving rod is connected with the swing arm (278).

13. The single-air-pump dual-channel breast pump of claim 10, wherein: the valve core (275) is a bidirectional sealing ring.

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