Nailing force-adjusting device for a pneumatic nail gun
AssigneeBasso Industry Corp.
InventorsChun-Chi Lai, Jin-Chi Chen
Life of this patent
Estimating the term…
Abstract
A nailing force-adjusting device for a pneumatic nail gun includes: a valve seat including a sleeve member sleeved on a cylinder, inner and outer flanges dividing an air-storing space between the cylinder and a gun housing into front and rear storing halves, the sleeve member defining a fluid passage for fluid communication with the rear storing half, the inner flange being formed with a valve opening in fluid communication with the fluid passage; and a sealing body formed with an axial through-hole and rotatable between a blocking position, in which the valve opening is blocked by the sealing body, and an unblocking position, in which the axial through-hole communicates fluidly with the valve opening.
Claims14
A nailing force-adjusting device for a pneumatic nail gun, the pneumatic nail gun including a gun housing, a cylinder, a piston, and a spring-loaded sealing seat, the cylinder being mounted in and cooperating with the gun housing to define an air-storing space therebetween, defining an axis and a chamber therein, having front and rear ends aligned with each other along the axis and a rear end opening at the rear end, and being formed with at least one front through-hole, the piston being disposed coaxially and movably in and in sealing contact with the cylinder to divide the chamber into front and rear chamber halves, the rear chamber half being in fluid communication with the air-storing space through the rear end opening of the cylinder, the front through-hole in the cylinder being in fluid communication with the front chamber half, the spring-loaded sealing seat being mounted movably in the gun housing, being disposed coaxially and rearwardly of the cylinder, and being movable between a closed position, in which the spring-loaded sealing seat abuts sealingly against the rear end of the cylinder so as to close the rear end opening of the cylinder, thereby preventing fluid communication between the air-storing space and the rear chamber half through the rear end opening, and an opened position, in which the spring-loaded sealing seat is spaced apart from the rear end of the cylinder, thereby permitting fluid communication between the rear chamber half and the air-storing space through the rear end opening, said nailing force-adjusting device comprising:
- a valve seat including a sleeve member that is adapted to be sleeved on the cylinder, an annular inner flange that radiates inwardly from said sleeve member toward the cylinder to contact sealingly the cylinder, and an annular outer flange that radiates outwardly from said sleeve member toward the gun housing to contact sealingly the gun housing so as to divide the air-storing space into front and rear storing halves such that the front storing half is in fluid communication with the front chamber half through the front through-hole in the cylinder and that the rear storing half is in fluid communication with the rear chamber half through the rear end opening of the cylinder when the spring-loaded sealing seat is disposed at the opened position, said sleeve member extending axially and rearwardly from said inner and outer flanges to the rear end of the cylinder and defining at least one fluid passage that is adapted to be in fluid communication with the rear storing half of the air-storing space when the spring-loaded sealing seat is disposed at the opened position and that is adapted to be blocked by the spring-loaded sealing seat when the spring-loaded sealing seat is disposed at the closed position, said annular inner flange having front and rear sides and being formed with at least one valve opening extending through said front and rear sides and in fluid communication with said fluid passage;
- and
- a sealing body adapted to be sleeved rotatably on the cylinder, having a rear side that is in sealing contact with said front side of said inner flange, and formed with at least one axial through-hole extending through said rear side of said sealing body and adapted to be in fluid communication with the front storing half of the air-storing space;
- wherein said sealing body is rotatable about the axis relative to said valve seat between a blocking position, in which said valve opening is blocked by said rear side of said sealing body, thereby preventing air from flowing from the rear storing half into the front storing half of the air-storing space through said fluid passage, said valve opening and said axial through-hole, and an unblocking position, in which said axial through-hole is axially registered and communicates fluidly with said valve opening, thereby permitting air to flow from the rear storing half into the front storing half of the air-storing space through said fluid passage, said valve opening and said axial through-hole.
A pneumatic nail gun comprising:
- a gun housing;
- a cylinder mounted in and cooperating with said gun housing to define an air-storing space therebetween, defining an axis and a chamber therein, having front and rear ends aligned with each other along the axis and a rear end opening at said rear end, and formed with at least one front through-hole;
- a piston disposed coaxially and movably in and in sealing contact with said cylinder to divide said chamber into front and rear chamber halves, said rear chamber half being in fluid communication with said air-storing space through said rear end opening of said cylinder, said front through-hole in said cylinder being in fluid communication with said front chamber half;
- a spring-loaded sealing seat mounted movably in said gun housing, disposed coaxially and rearwardly of said cylinder, and movable between a closed position, in which said spring-loaded sealing seat abuts sealingly against said rear end of said cylinder so as to close said rear end opening of said cylinder, thereby preventing fluid communication between said air-storing space and said rear chamber half through said rear end opening, and an opened position, in which said spring-loaded sealing seat is spaced apart from said rear end of said cylinder, thereby permitting fluid communication between said rear chamber half and said air-storing space through said rear end opening;
- and
- a nailing force-adjusting device including
- a valve seat including a sleeve member that is sleeved on said cylinder, an annular inner flange that radiates inwardly from said sleeve member toward said cylinder to contact sealingly said cylinder, and an annular outer flange radiating outwardly from said sleeve member toward said gun housing to contact sealingly said gun housing so as to divide said air-storing space into front and rear storing halves such that said front storing half is in fluid communication with said front chamber half through said front through-hole in said cylinder and that said rear storing half is in fluid communication with said rear chamber half through said rear end opening of said cylinder when said spring-loaded sealing seat is disposed at the opened position, said sleeve member extending axially and rearwardly from said inner and outer flanges to said rear end of said cylinder and defining at least one fluid passage that is in fluid communication with said rear storing half of said air-storing space when said spring-loaded sealing seat is disposed at the opened position and that is blocked by said spring-loaded sealing seat when said spring-loaded sealing seat is disposed at the closed position, said annular inner flange having front and rear sides and being formed with at least one valve opening extending through said front and rear sides and in fluid communication with said fluid passage, and
- a sealing body sleeved rotatably on said cylinder, having a rear side that is in sealing contact with said front side of said inner flange, and formed with at least one axial through-hole extending through said rear side of said sealing body and in fluid communication with said front storing half of said air-storing space;
- wherein said sealing body is rotatable about the axis relative to said valve seat between a blocking position, in which said valve opening is blocked by said rear side of said sealing body, thereby preventing air from flowing from said rear storing half into said front storing half of said air-storing space through said fluid passage, said valve opening and said axial through-hole, and an unblocking position, in which said axial through-hole is axially registered and communicates fluidly with said valve opening, thereby permitting air to flow from said rear storing half into said front storing half of said air-storing space through said fluid passage, said valve opening and said axial through-hole.
Dependencies are inferred from the claim text.