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1. (WO2018082155) PISTON ASSEMBLY FOR PUMP AND PUMP

Pub. No.:    WO/2018/082155    International Application No.:    PCT/CN2016/109068
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Fri Dec 09 00:59:59 CET 2016
IPC: F04B 45/047
A61B 5/022
Applicants: XIAMEN KOGE MICRO TECH CO., LTD.
厦门科际精密器材有限公司
Inventors: DONG, Zhenkai
董振凯
QUE, Peitao
阙培涛
Title: PISTON ASSEMBLY FOR PUMP AND PUMP
Abstract:
A piston assembly (1) for a pump, and a pump. The piston assembly (1) comprises: an airbag (11) and a movable connecting bracket (12). The airbag (11) comprises: a base tray (111), a bag body (112), and a sleeve tube (113), the base tray (111) and the sleeve tube (113) respectively being positioned on two opposite sides of the bag body (112), an air cavity (1120) being defined inside the bag body (112), the side of the air cavity (1120) facing the base tray (111) being penetrated to form an opening (1122), and the bottom wall of the air cavity (1120) being provided with a first through hole (1121) in communication with the sleeve tube (113). A connecting support leg (121) is provided on the connecting bracket (12), a second through hole (1211) being disposed on the connecting support leg (121), the connecting support leg (121) extending into the sleeve tube (113); when the connecting bracket (12) moves, the second through hole (1211) and the first through hole (1121) can alternately communicate and disconnect.