| 摘要 |
An expandable bladder toy water gun is provided. It includes a main housing having a barrel, a water ejection nozzle, a handle, a trigger, a water storage tank, a hand pump as well as an inflatable bladder connected to the main housing. The pump is connected to both the tank and the bladder. There is a bladder release valve with an upstream side connected to the bladder and a downstream side connected to the nozzle for water ejection whe n the trigger is pulled. The elasticity of the bladder is used as the motive force for liquid ejection. The bladder is a tubular member which has a section of weakened elastic strength relative to the remainder of the member. In one embodiment, the bladder has a variable diameter, larger at its front end and smaller at its back end. In another embodiment, the bladde r has a constant diameter with a wall thickness gradient. The nozzle includes a turbulence member for enhanced laminar flow ejection which control member has a plurality of linea r stream guidance walls. |
