RATCHET WRENCH WITH HANDGRIP RATCHET CONTROL

摘要

The ratchet wrench with handgrip ratchet control includes an axially rotatable rod installed within the handle. The rod is connected to a handgrip disposed externally to the handle. The rod rotates upon manual rotation of the handgrip. An end of the rod adjacent to the wrench head and opposite the handgrip has an axially offset flexible spring pin extending therefrom that engages a blind hole or receptacle in the back of the pawl in the wrench head. Rotation of the handgrip rotates the rod and its pin to swivel the pawl in the selected direction to lock rotation of the wrench drive in one rotational direction, while allowing rotation in the opposite direction. Rotation of the handgrip in the opposite direction reverses the above-described operation. One or more detents may be provided to secure the handgrip in the desired pawl actuating position.

主权项

1. A ratchet wrench with handgrip ratchet control, comprising:
a wrench head; a circular ratchet rotatably disposed within the wrench head; a tool drive extending axially from the ratchet, the tool drive being selectively rotatable in unison with the ratchet; a pawl disposed within the wrench head, the pawl having a plurality of teeth disposed thereon, the pawl teeth selectively engaging the ratchet, the pawl having a blind receptacle defined therein opposite the pawl teeth; an elongate, hollow handle extending from the wrench head, the handle having a handgrip end opposite the wrench head; a handgrip disposed concentrically about the handgrip end of the handle, the handgrip being selectively rotatable coaxially about the handgrip end of the handle; a rod disposed coaxially through the hollow handle, the rod having a handgrip attachment end and a pawl engagement end opposite the handgrip attachment end, the handgrip being fixed to the rod for selective rotation therewith; and an eccentric pin extending from the pawl engagement end of the rod, the pin engaging the receptacle in the pawl; wherein the pawl selectively locks the ratchet to permit the ratchet to rotate in a first direction while preventing rotation in a second direction opposite the first direction, and is switchable by rotation of the handgrip and rod so that the pawl selectively locks the ratchet to permit the ratchet to rotate in the second direction while preventing rotation in the first direction.