| 摘要 |
A cup structure for a vacuum cupping device includes a cup body (1) having a valve opening (11) at a top end. The cup structure further includes a plug (2) which is provided with a first pneumatic channel (23) extended axially, the first pneumatic channel (23) communicating with a cavity of the cup body (1). The plug (2) is provided with a front seal member (22) and a rear seal member (21). The valve opening (11) is located between the front seal member (22) and the rear seal member (21). The plug (2) is provided with at least one second pneumatic channel (24), and the first pneumatic channel (23) communicates with the second pneumatic channel (24). The plug (2) is squeezed to flexibly deform so that the vacuum state inside the cavity of the cup body (1) is released through the second pneumatic channel (24). |
