| 摘要 |
An actuator (52) for a personal care appliance (50) comprises a housing (54), a spindle (64), a tangential actuator portion (70), and an axial actuator portion (72). The tangential actuator portion (70) includes first and second magnet and pole assemblies (76,78) that define a tangential spring function of the tangential actuator portion. The axial actuator portion (72) includes third and fourth magnet and pole assemblies (90,92) that define an axial spring function of the axial actuator portion. At least one of (i) the first and second magnet and pole assemblies (76,78) of the tangential actuator portion (70) and (ii) third and fourth magnet and pole assemblies (90,92) of the axial actuator portion are configured to enhance a corresponding spring function of the axial actuator portion or tangential actuator portion, respectively. |
| 主权项 |
1. An actuator for a personal care appliance comprising:
(a) a housing of magnetic material having an inner surface and a principal axis extending along a length dimension thereof, the housing further including at least first and second portions along the length dimension thereof; (b) a spindle of magnetizable material extending longitudinally within the housing along the principal axis, the spindle further including at least first and second portions corresponding with the at least first and second portions of the housing, respectively; (c) a tangential actuator portion coupled between the first portion of the housing and the first portion of the spindle, wherein the tangential actuator portion comprises (i) a first magnet and pole assembly, (ii) a second magnet and pole assembly (78), and (iii) an electromagnetic coil disposed about and coupled to the spindle in-between the first and second magnet and pole assemblies, wherein responsive to a rotation control signal applied to the electromagnetic coil, the tangential actuator portion rotationally displaces the spindle with respect to the housing about the principal axis; and (d) an axial actuator portion coupled between the second portion of the housing and the second portion of the spindle, wherein the axial actuator portion comprises (i) a third magnet and pole assembly, (ii) a fourth magnet and pole assembly, and (iii) a second electromagnetic coil disposed about and coupled to the spindle in-between the third and fourth magnet and pole assemblies, wherein responsive to a translation control signal applied to the second electromagnetic coil, the axial actuator portion axially displaces the spindle with respect to the housing along the principal axis, wherein the first and second magnet and pole assemblies define a tangential spring function of the tangential actuator portion, and the third and fourth magnet and pole assemblies define an axial spring function of the axial actuator portion, and wherein the tangential actuator portion and the axial actuator portion further comprise at least one of (i) the first and second magnet and pole assemblies of the tangential actuator portion configured to enhance the axial spring function of the axial actuator portion, and (ii) third and fourth magnet and pole assemblies of the axial actuator portion configured to enhance the tangential spring function of the tangential actuator portion. |
