Gearshift of hand breast pump

Abstract

The invention discloses a shifting device of a hand breast pump which is arranged at a negative pressure generating cover. A milk bottle interface, a sucking plate interface and a negative pressure piston casing are arranged on the negative pressure generating cover. A negative pressure piston is covered on the inner surface of the negative pressure piston casing. A lifting rod is arranged on the bottom of the negative pressure piston. A fulcrum of a compression bar is arranged on the negative piston casing. One end of the compression bar is matched with the lifting rod, and the other end of the compression bar is exposed out of the negative piston casing. A plurality of supporting ports are distributed on the compression rod of the breast pump with intervals. One supporting port can be selected to be matched with the fulcrum arranged on the negative piston casing. The structure of a plurality of supporting ports is adopted by the compression bar. Therefore, when in use, the supporting ports can be changed according to the comfort requirements to the negative pressure absorption force bearing of human body. The negative pressure region is expanded. The milk sucking requirements of lactating breasts under various physiological states can be satisfied. Breast diseases can be avoided. And breast swelling and body beautifying effects can be realized.

Description

technical field [0001] The invention relates to a feeding bottle device for suctioning breast milk with negative pressure, in particular to a negative pressure generating device for a hand-pressed breast pump. Background technique [0002] At present, a kind of breast pump of being sold on the market. It is composed of a feeding bottle, a negative pressure generating cover threadedly connected with the feeding bottle, a breast suction plate connected with the negative pressure generating cover, and a sky cover on the negative pressure generating cover. The negative pressure generating cover is provided with a feeding bottle threaded interface, The threaded interface of the sucking pan, the negative pressure piston shell, the negative pressure piston covers the inner surface of the negative pressure piston shell, and is tightly connected with the negative pressure piston shell, the threaded interface of the breast sucking pan is exposed at the bottom of the negative pressure ...

AI Technical Summary

Problems solved by technology

It is composed of a feeding bottle, a negative pressure generating cover threadedly connected with the feeding bottle, a breast suction plate connected with the negative pressure generating cover, and a sky cover on the negative pressure generating cover. The negative pressure generating cover is provided with a feeding bottle threaded interface, The threaded interface of the sucking pan, the negative pressure piston shell, the negative pressure piston covers the inner surface of the negative pressure piston shell, and is tightly connected with the negative pressure piston shell, the threaded interface of the breast sucking pan is exposed at the bottom of the negative pressure piston shell The negative pressure piston part and the silicone valve located at the mouth of the feeding bottle together form a negative pressure space in the negative pressure generating cover, that is, when the negative pressure piston is lifted upwards, the silicone valve is closed, and the negative pressure space is enlarged to generate negative pressure. When the negative pressure piston resets downward, the negative pressure gradually disappears, the silicone valve opens, and the breast milk enters the feeding bottle; a lifting rod is arranged at the bottom of the negative pressure piston, and the lifting rod cooperates with one end of the pressing rod to pass One end of the pressure rod is pried up to drive the lifting rod up, and the bottom part of the negative pressure piston is gradually lifted, the other end of the pressure rod is exposed outside the negative pressure piston shell, and the fulcrum of the pressure rod is set on the negative pressure piston shell; the above-mentioned breast pump , because the longitudinal section of the bottom of the negative pressure piston connected to the lifting rod is approximately square, it is difficult for the negative pressure piston to reset evenly by relying on its own tension, and because its own tension is small, the reset time is prolonged, so the bottom shape of the negative pressure piston It needs to be further improved; at the same time, the existing breast pump only has one force arm to cooperate with the fulcrum due to the pressure rod, so the lifting height of the lifting rod is limited, the negative pressure interval can be reduced, and it cannot withstand the negative pressure according to the human breast. It is not conducive to the breast protection of the human body to realize the free adjustment by the ability of pressing the suction force. Using the above-mentioned breast pump is still easy to cause breast diseases of the human body. Therefore, further improvement is required on this basis.

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