| 摘要 |
<p>A foam spray head assembly 100 includes a push head 1, a mounting member 2, a netted member 3, an air valve 4, a main plunger 5, a piston unit 6, a rod unit 7, a resilient member 8, a cylinder unit 9 and a valve 10. The netted member has a first net 32 and a second net 33. The air valve has a first groove 41 and a second groove 42. The main plunger has a first plunger 51 and a second plunger 52. The first plunger is located in the second groove and defines a first chamber 40. The piston unit has a first piston 61 and a second piston 62. The rod unit extends through the main plunger. The resilient member is mounted to the second plunger. The cylinder unit has a first cylinder and a second cylinder. The first piston is movable in the first cylinder and forms an enclosed second chamber (80 figure 3). The second piston is movable in the second cylinder and forms an enclosed third chamber (90 figure 3).</p> |
