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URGING FORCE ADJUSTING DEVICE, HYDRAULIC CONTROL VALVE USING THE SAME, AND URGING FORCE ADJUSTING DEVICE MANUFACTURING METHOD
URGING FORCE ADJUSTING DEVICE, HYDRAULIC CONTROL VALVE USING THE SAME, AND URGING FORCE ADJUSTING DEVICE MANUFACTURING METHOD
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机译：迫力调整装置，使用该装置的液压控制阀以及迫力调整装置的制造方法
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摘要
PROBLEM TO BE SOLVED: To provide an urging force adjusting device capable of realizing high accuracy adjustment of an urging force acting on a stored member stored in a cylindrical member so as to be able to make a reciprocating motion.SOLUTION: An urging-force adjusting unit 30 adjusting an urging force acting on a spool 22, includes: a housing 31 connected to a sleeve 21; a pressure receiving section 32 connected to the spool 22; a spring 33; and an adjuster screw 34 that includes a male screw 342 screwed with the housing 31, and a restriction section 343 deformable radially outwardly. At a time of adjusting the urging force, a position of the adjuster screw 34 is adjusted while causing a force resisting the urging force of the spring 33 to act on the adjuster screw 34 in a spool direction. Subsequently, a force in the spool direction is caused to act on the restriction section 343 while keeping the force resisting the urging force act on the adjuster screw 34, the restriction section 343 deforms radially outwardly, and the adjuster screw 34 is fixed to the housing 31. As a result, it is possible to prevent positional misalignment during adjustment of the urging force and fixing of the position.
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