Troxell Law Office PLLC
Ratchet wheel structure of ratcheting wrench
An improved ratchet wheel structure of a ratcheting wrench, having a restricting base at the bottom of the ratchet wheel, wherein the external diameter of the restricting base is slightly smaller than the diameter of the bottom hole on the fixing base of the ratchet wheel, and it extends to the intersection point of the ratchets of the ratchet wheel to form a serrated disk, and the ratchets aligned in parallel with the axial direction in the middle section of the ratchet wheel, and it extends to the intersection point of the positioning area such that the tip of the ratchets is corresponsive to the external diameter of the ratchet wheel, and a latching groove being disposed around an appropriate position in the positioning area such that a C-shaped buckle being latched into the latching groove for positioning. The ratchet wheel is embedded into the fixing groove of the ratchet wheel, and the serrated disk of the ratchet wheel and the restricting base just fit into the accommodating groove of the cross base and the restricting hole for the positioning, and the C-shape buckle will then be embedded into the inner edge of the hole in the accommodating groove such that the ratchet wheel in the accommodating groove will not fall off. Since the ratchets of the ratchet wheel are relatively of the same size as the external diameter of the ratchet wheel, the ratchets can keep its minimum external diameter for the ratchet wheel, and allow maximum effective ratchet diameter for the pawls of the blocking member for the engagement of the ratchets in order to strengthen the ratchets and avoid them from being cracked. In addition, the ratchet wheel and the ratchets are formed integrally to accomplish the effect of easy manufacture and quality inspection.
B
B25B
inventional
Chih-Ming
Chang