DRIVING TOOL WITH INTERNAL AIR COMPRESSOR

摘要

A driving tool having first and second linear motors, a head assembly, a nosepiece and a driver. The first linear motor forms an air compressor and includes a scotch yoke mechanism for translating a first piston in a first cylinder. The scotch yoke mechanism includes a crank arm, a crank arm roller, which is coupled to the crank arm, and a connecting rod having a roller slot into which the crank arm roller is received. At least a portion of the roller slot is configured to vary an output rate at which the connecting rod translates along a translation axis relative to an input rate at which the crank arm roller moves in a direction that is parallel to the translation axis.

主权项

1. A hand-held driving tool comprising:
a tool body; a nosepiece; a magazine assembly coupled to at least one of the nosepiece and the tool body and configured to hold and sequentially feed fasteners to the nosepiece, a handle including a trigger switch; a motor and transmission having an output member that is rotatable about a rotational axis, the motor being energized by actuation of the trigger switch; a first cylinder having a first cylinder first end and a first cylinder second end; a first piston movable within the first cylinder and drivable by the motor; a second cylinder having a second cylinder first end and a second cylinder second end; a second piston movable within the second cylinder; a driver coupled to the second piston for movement therewith, wherein the driver is configured to drive the fastener fed to the nosepiece when the second piston travels from the first end of the second cylinder to the second end of the second cylinder; a head assembly connected to the first cylinder first end and the second cylinder first end, the head assembly defining a multiplicity of passages to control fluid communication between the first cylinder and the second cylinder.