| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a spring of a spring unit for transmitting reaction force from a reaction member to a plunger from being hooked on the plunger at low input operation and to prevent generation of noise and failure of operation. <P>SOLUTION: The plunger 32 has a front shaft part 32a for receiving reaction force from the reaction member 34 and a flange part 32b. The spring unit 40 positioned between the reaction member 34 and the flange part 32b is provided with a first cylindrical retaining member 41 installed on the front shaft part 32a of the plunger and having a front end engaged with the reaction member 43; a second retaining member 42 installed on an outer periphery of a rear end of the first retaining member 41 and having a rear end rearwardly extending from the first retaining member 41 and engaged with the flange part 32b; and a belleville spring 43 installed on an outer periphery of the first retaining member 41 and retained between both retaining members 41, 42. When the reaction force applied from the reaction member 43 to the first retaining member 41 becomes a load of the belleville spring 43 or more, the first retaining member 41 deflects the belleville spring 43, is moved and engaged with a step part 22g of a valve body 22. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
