Patent ID: 7044621

Claim:
A lamp seat of a hand tool comprising: a clamping seat, an upper end of the clamping seat having a clamping portion formed by four posts; a lower end of the clamping seat having a cambered surface; a center of the first cambered surface having a ball shape groove; a receiving seat; an upper side of the receiving seat having a second cambered surface; a center of the cambered surface being protruded with a combining portion; a top of the combining portion having a ball-like shape corresponding to the ball shape groove of the clamping seat; a bottom side of the receiving seat being formed with a first through hole and a second through hole; each of the first through hole and second through hole having C shape cross sections; each of the first through hole and second through hole passing through the center of the bottom side of the receiving seat; the first through hole having a cross section larger than that of the second through hole; an inner wall of the first through hole being formed with a tooth portion and an inner wall of the second through hole being formed with a tooth portion.