| 摘要 |
PURPOSE: To make a key member thin-walled and lightweight by bringing an engaging part between the key member and a valve plunger close to a contact part between the key member and a valve body so as to reduce bending moment applied to the key member. CONSTITUTION: The engaging parts 31d of a key member 31 are engaged with the ring groove 11a of a valve plunger 11 so as to prevent the valve plunger 11 from slipping out of a valve body. A guide part 6a for guiding the valve plunger 11 slidably is formed at the valve body on the rear side of the key member 31, and an axial passage 17a constituting a transforming passage 17 is formed radially outside of the inner peripheral surface of the guide part 6a. The key member 31 is inserted into a radial passage 17b constituting the transforming passage 17, and the rear side end face of the key member 31 is brought into contact with the tip face of the guide part 6a. |
