US 11,865,684 B2
Pneumatic electric nail gun
An-Gi Liu, Taichung (TW); Chang-Sheng Lin, Taichung (TW); and Fu-Ying Huang, Taichung (TW)
Assigned to Basso Industry Corp., Taichung (TW)
Filed by BASSO INDUSTRY CORP., Taichung (TW)
Filed on Feb. 3, 2021, as Appl. No. 17/166,025.
Claims priority of application No. 109103698 (TW), filed on Feb. 6, 2020.
Prior Publication US 2021/0245344 A1, Aug. 12, 2021
Int. Cl. B25C 1/04 (2006.01); B25C 1/06 (2006.01); F16F 15/08 (2006.01)
CPC B25C 1/041 (2013.01) [B25C 1/047 (2013.01); B25C 1/06 (2013.01); F16F 15/08 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A pneumatic electric nail gun comprising:
a muzzle unit that surrounds a striking axis and that is adapted for loading a nail;
a cylinder unit that includes
a striking cylinder having a first end that is connected to said muzzle unit, and a second end that is opposite to said first end along the striking axis, and
a piston rod subunit extending from said striking cylinder into said muzzle unit, and movable relative to said striking cylinder along the striking axis by an air pressure in a space between said piston rod subunit and said second end of said striking cylinder from a standby position, where a top end of said piston rod subunit is adjacent to said second end of said striking cylinder, to a nail-striking position, where said top end of said piston rod subunit is moved away from said second end of said striking cylinder and where said piston rod subunit is adapted to strike the nail;
an electric unit that is connected to said muzzle unit for driving movement of said piston rod subunit from the nail-striking position to the standby position, and simultaneously increasing the air pressure in said space between said piston rod subunit and said second end of said striking cylinder; and
a connecting unit that includes
a plurality of fasteners extending through said electric unit and securing said electric unit to said muzzle unit, and
a plurality of buffer members, each of said buffer members being made of a flexible material, surrounding a respective one of said fasteners, being in direct contact with the respective one of said fasteners, said electric unit and said muzzle unit, and directly filling a space delimited by said respective one of said fasteners, said electric unit and said muzzle unit for shock absorption;
wherein said electric unit includes a speed reduction subunit that is formed with a plurality of through holes extending in a direction of a rotary axis which is skew to the striking axis; and
wherein each of said buffer members is received in a respective one of said through holes, has a first end that is in direct contact with said muzzle unit and that is disposed within the respective one of said through holes, and a second end that is in direct contact with a head of the respective one of said fasteners and that extends out of the respective one of said through holes, and having a length in a direction of the rotary axis that is greater than a length of the respective one of said through holes.