| 摘要 |
A toothbrush having a hinge located between its head and its handle, provided by a first and second hinge parts extending respectively from the head end of the toothbrush toward the handle end, and from the handle end toward the head end, in a longitudinally overlapping side by side relationship, the overlapping parts being able to rotate relative to each other through a restricted angle about an axis generally perpendicular to the longitudinal axis, the two parts being linked by a torsion element between them. |
