| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a solenoid proportional throttle valve and a power steering device in which dimensional tolerances of respective parts do not have influence on the maximum flow rate provided by the maximum opening. <P>SOLUTION: This solenoid proportional throttle valve 30 can vary the opening area Av of a variable throttle part 22 defined between a seat part 29 of a valve hole 16 and itself in response to displacement of a valve element 25, and comprises an opening area variable region of changing the opening area Av of the variable throttle part 22 in response to an increase-decrease in opening of the valve element 25 and an opening area constant region of not changing the opening area Av of the variable throttle part 22 in response to an increase-decrease in maximum opening X1 of the valve element 25. <P>COPYRIGHT: (C)2010,JPO&INPIT |
