| 摘要 |
<p>Disclosed is a pneumatic push button with air compensating structure, comprising a plunger (1), an upper cover (2), a body (5), and a spring (4). The upper cover (2) is fixedly attached to the body (5). An air outlet is provided at the bottom of the body (5). The spring (4) is installed inside the chamber of the body (5). The pneumatic push button with an air compensating structure further comprises a seal (3). A guide hole (21) is provided on the upper cover (2). The plunger (1) is movably installed inside the guide hole (21), and the bottom of the plunger (1) extends into the chamber of the body (5). The spring is tensely arranged between the plunger (1) and the inner wall of the bottom of the body (5). A groove (11) is provided around the bottom of the plunger (1), and the seal (3) movably fits into the groove (11) so that the seal slides along the inner wall of the body (5) in a sealed manner with the up and down movement of the plunger (1) and mates with the inner wall of the groove (11) to form a sealed air path or an open air path. The pneumatic push button features a simple structure, swift air compensation and reliability.</p> |
