Flow rate regulator unit and aerosol type product with flow rate regulator unit
US-8201757-B2Abstract
A flow rate regulator of a unit structure, in which the mechanism keeps constant the amount of injection of the contents in an aerosol container independent of a variation in pressure of gas for content ejection. The flow rate regulator unit has an outer sheath member ( 15 ), an inner sheath member ( 16 ), piston members ( 17, 18 ), a coil spring ( 25 ), and an ejection piece ( 19 ). The contents are ejected in substantially the following route: “hole ( 15 a )—annular space region ( 21 ) for outer path—hole ( 16 a )—annular space region ( 22 ) for inner path—holes ( 17 b , 18 b )—inside path ( 18 c )—valve action region ( 20 )—penetration section ( 16 d )—groove-like sections ( 16 f , 19 a )—ejection hole ( 19 c ).” An annular skirt section ( 17 a ) moves in the left-right direction based on a magnitude relation between force in the right direction caused by ejection gas pressure and acting on the piston members ( 17, 18 ) and urging force to the left direction caused by the coil spring ( 25 ), and this changes an inflow cross-sectional area from the hole ( 16 a ) for flow rate adjustment to the annular space region ( 22 ) for inner path.
Patent figures（8）
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