| 摘要 |
This invention provides a self-powered dental hygiene device having an outer housing (1) with three sections, a battery section (2) at one end, an intermediate electric motor section (3) and at the second end a transmission section (4) with a head end section (5) at the distal end. The head end section includes an aperture (25) therethrough, transverse to the transmission section and designed to hold a replaceable dental tool (31), designed for reciprocating longitudinal motion. The casing is shaped such that the first battery section extends at an angle of between (7) and (12) degrees relative to the transmission section, and the aperture is preferably perpendicular to the axis of the transmission section. A collar (32), slidably secured within the tool head, is capable of holding a dental tool bit in either of two opposing directions; each end of the collar is provided with means to prevent axial and rotary motion of the tool bit relative to the collar. |
