| 摘要 |
<p>A universal joint (10) includes a coupling member (3) having an end portion (31) for coupling with a tool. A body (1) includes a rounded base (11) pivotably mounted to the other end portion (33) of the coupling member (3). The body (1) further includes a drive column (12) spaced from the rounded base (11) along an axis (54). A reinforcing section (13) is intermediate the rounded base (1) and the drive column (12). The reinforcing section (13) includes an outer periphery having a recessed portion (14) with a receptacle (131) extending in a radial direction perpendicular to the axis (54). A control member (20) is moveably received in the receptacle (131) to control coupling of the drive column (12) and an object to be driven. In any case, a spacing from an outer end (22) of the control member (20) to the axis (54) in the radial direction is substantially not larger than a spacing from the outer periphery of the reinforcing section (13) to the axis (54) in the radial direction.</p> |
