| 摘要 |
Valve trigger assembly for a pneumatic nailer including a geometrically configured valve bushing having threads at a lower end for securing the assembly into a housing of the nailer and a plurality of O-rings about the configured valve bushing. A geometrically configured valve piston including a plurality of O-rings about the configured valve piston reciprocates in the valve bushing against a spring and is retained in the valve bushing by a snap ring. Small holes in a mid-portion of the valve bushing provide for passage of air supply line pressure for charging the poppet through the valve bushing and large holes in an upper portion of the valve bushing. The large holes also provide for discharge of air behind the poppet and through the valve bushing to the atmosphere. An indented slot in the top of the valve bushing provides for finite adjustment of the valve trigger assembly in the housing of the nailer and hexagonal sides about the top of the valve bushing provide for position locking of the valve bushing in the housing of the nailer with a configured rectangular key which engages into a key indentation in the housing of the nailer.
|
