Patent ID: 6386075
Filing Date: 2002-05-14
Classification: B25G,Y10T

Abstract:
A swingable handle for delivering torque to rotate a tool bit of a hand tool about a rotation axis, said handle comprising:a rear handle body having a front end wall facing forward toward the tool bit, a rear end wall disposed opposite to said front end wall in a longitudinal direction parallel to the rotation axis, and an outer surrounding wall disposed between said front and rear end walls, said front end wall having an accommodating cavity which extends toward said rear end wall in the longitudinal direction and which is surrounded by said outer surrounding wall, said outer surrounding wall having an inner peripheral edge portion to define a guiding slot which extends inwardly and in a radial direction relative to the rotation axis to communicate with said accommodating cavity; a front handle body having a mount end portion adapted to connect with a tool shaft for holding the tool bit, and a coupling end portion opposite to said mount end portion in the longitudinal direction, said coupling end portion being pivoted to said front end wall about a pivot axis transverse to the rotation axis, said coupling end portion having a first mating wall which extends in a transverse direction parallel to the pivot axis, which confronts said front end wall, and which is distal to said mount end portion relative to the pivot axis; a coupling member mounted in and movable relative to said accommodating cavity in the longitudinal direction, and including a second mating wall which is disposed to extend in the transverse direction and to confront and mate with said first mating wall such that when said front end wall is turned about the pivot axis, said first and second mating walls being angularly movable relative to each other, said coupling member further including a shifted portion which is disposed to be fitted in and to be movable relative to said guiding slot in the longitudinal direction such that said second mating wall is moved by said shifted portion away from said first mating wall; a biasing member disposed to bias said second mating wall toward said first mating wall in the longitudinal direction; and retaining means disposed between said first and second mating walls such that when said second mating wall is biased to move toward said first mating wall, said retaining means prevents said first mating wall from moving angularly relative to said second mating wall, and such that when said second mating wall is moved by said shifted portion away from said first mating wall against biasing action of said biasing member, said second mating wall is angularly movable relative to said first mating wall between an in-line position, where said mount end portion is in-line with said rear handle body, and an angular position, where said rear handle body forms an angle with the rotation axis.