A multi-function charging coil bobbin (90) for a power toothbrush (10) configured to improve the durability of the toothbrush and to simplify the assembly process. The coil bobbin (90) provides a bridge spring (98) for tolerance mitigation and shock protection, and also provides a coil winding surface (92) such that the bobbin (90) can be wound prior to final assembly. The coil bobbin (90) may be unitary in structure for low cost.