Motorized hand tool apparatus and assembly method

摘要

A motorized hand tool such as a cordless ratchet wrench is configured for reducing assembly and disassembly processes. The motorized hand tool includes a motor end plate that may be fastened to a drive member such as a ratchet head assembly without the use of fasteners or assembly tooling such as presses, fixtures or hammers. A flange on the motor end plate can pass through a keyway in a periphery of the ratchet head assembly and may be then be rotated out of the keyway and into a peripheral slot of the ratchet head assembly. A rib protruding inwardly from a clamshell housing portion of the tool closes the keyway to prevent the flange on the motor end plate from rotating back into the keyway.

主权项

1. A motorized hand tool apparatus, comprising:
a motor assembly including a motor end plate coupled to a motor, the motor assembly further including a flange portion; a ratchet head assembly coupled to the motor assembly, the ratchet head assembly including a slot defined by a lip disposed around a first peripheral segment of the ratchet head assembly, the slot sized to engage the flange portion, and an aperture defined by an interruption in the lip around a second peripheral segment of the ratchet head assembly, the aperture sized to provide a keyway for inserting the flange portion into the slot; and a clamshell housing assembled around the motor assembly, the clamshell housing including an inwardly protruding rib portion engaged in the aperture and obstructing rotation of the flange from the slot.