Hand squeeze powered rotary tool

摘要

A manually powered rotary tool includes improvements to size, drive direction input, drive speed, assembly, strength, and cost. A handle is mounted high in the housing to provide a vertically compact tool. A selector switch controls a spiral ratchet mechanism from outside the housing to better enclose the mechanism and provide improved access to the selecting operation. The ratchet mechanism uses a lateral moving selector bar for effective operation with the external selector switch. The spiral ratchet gears are configured for die cast manufacturing. Various components are of one-piece construction and designed for simplified assembly.

主权项

1. A manually powered rotary tool including a body and a handle extending therefrom, comprising:
a shaft rotatably mounted within the body along a length of the body including a shaft axis; a slidable ratchet mechanism fitted upon the shaft wherein moving the mechanism along a length of the shaft selectively causes the shaft to rotate, the mechanism substantially enclosed by the body, the mechanism including a first location and a second location along the shaft; a direction selector of the mechanism operable to determine a direction of rotation of the shaft upon motion of the mechanism, the direction selector moving along with the mechanism within the body; the handle movable relative to the body, the handle linked to the mechanism wherein moving the handle causes the mechanism to move from the first location toward the second location; a selector switch mounted to the body and exposed externally on the body, the switch movable between at least two switch positions on the body, the switch normally remaining stationary on the body in one of the two switch positions as the mechanism moves within the body; and the selector switch linked to the direction selector in the first location of the mechanism wherein moving the selector switch causes the direction selector to move to a corresponding position, the selector switch thereby communicating an external action on the switch to the tool interior at the direction selector.