An actuator has: an affixed section having a coil; a first mobile section that is elastically held and disposed so as to allow movement in the axial direction inside one end of the coil, and has a first magnet magnetized in the axial direction of the coil and disposed on one end in the axial direction; and a second mobile section that is elastically held and disposed so as to allow movement in the axial direction inside another end of the coil, and has a second magnet magnetized in the axial direction and disposed on the other end in the axial direction. The first and second magnets are disposed such that identical magnetic poles are in the same direction in the axial direction, and the first and second mobile sections move in opposite directions along the same axis when a current is applied to the coil.

A drawing device, including: a drawing head which performs drawing on a drawing target; a head moving unit which moves the drawing head in a first direction and in a second direction which intersects with the first direction; a processor which controls the drawing head and the head moving unit; and a plurality of maintenance units in which the drawing head performs maintenance with contents different from each other, wherein within a range where the drawing head is moved by the head moving unit, a drawing area, a stand-by area and the plurality of maintenance units are provided at positions different from each other, and the processor controls the head moving unit to control whether the maintenance is performed or not in at least one of the plurality of maintenance units when the drawing head moves between the stand-by area and the drawing area.

A drawing device, including: a drawing head which performs drawing on a drawing target; a head moving unit which moves the drawing head in a first direction and in a second direction which intersects with the first direction; a processor which controls the drawing head and the head moving unit; and a plurality of maintenance units in which the drawing head performs maintenance with contents different from each other, wherein within a range where the drawing head is moved by the head moving unit, a drawing area, a stand-by area and the plurality of maintenance units are provided at positions different from each other, and the processor controls the head moving unit to control whether the maintenance is performed or not in at least one of the plurality of maintenance units when the drawing head moves between the stand-by area and the drawing area.

A nail contour detecting device including a processor, wherein the processor obtains first feature point data of a first nail contour which is a nail contour detected from a first nail image obtained by imaging a nail of a finger or a toe, and second feature point data of a second nail contour which is a nail contour detected from a second nail image obtained by imaging a nail of the same finger or toe as the first nail image; and the processor obtains one nail contour based on the first feature point data and the second feature point data.

A nail contour detecting device including a processor, wherein the processor obtains first feature point data of a first nail contour which is a nail contour detected from a first nail image obtained by imaging a nail of a finger or a toe, and second feature point data of a second nail contour which is a nail contour detected from a second nail image obtained by imaging a nail of the same finger or toe as the first nail image; and the processor obtains one nail contour based on the first feature point data and the second feature point data.

An electrical appliance for personal care includes a handle with a longitudinal axis, and a plug-on part which can be attached to the handle, wherein a vibration unit having an electric motor and an eccentric element is arranged in the handle, wherein a plug-like coupling structure protrudes from the handle, which plug-like coupling structure forms an interface with a substantially mirror-inverted socket-like coupling structure of the plug-on part, wherein the interface has at least two stages with different circumferential geometry, wherein at least one of the stages has a rotation-preventing device between the handle and the plug-on part, and wherein a stop surface of the handle for the plug-on part extends obliquely with respect to the longitudinal axis of the handle.

An electrical appliance for personal care includes a handle with a longitudinal axis, and a plug-on part which can be attached to the handle, wherein a vibration unit having an electric motor and an eccentric element is arranged in the handle, wherein a plug-like coupling structure protrudes from the handle, which plug-like coupling structure forms an interface with a substantially mirror-inverted socket-like coupling structure of the plug-on part, wherein the interface has at least two stages with different circumferential geometry, wherein at least one of the stages has a rotation-preventing device between the handle and the plug-on part, and wherein a stop surface of the handle for the plug-on part extends obliquely with respect to the longitudinal axis of the handle.

A method for use with a toenail or fingernail including a nail plate with a distal nail tip and a distal overgrown portion of a cuticle extending onto the nail plate. The method includes removing, with an electric powered rotatory sanding tool, the distal overgrown portion of the cuticle from the nail plate. The nail plate is buffed after removing the distal overgrown portion of the cuticle. The nail plate is cleaned after buffing the nail plate. A layer of an ultraviolet curable gel is applied to the nail plate by using a brush to push the ultraviolet curable gel onto the nail plate. The layer of the ultraviolet curable gel is exposed to an ultraviolet light source for a sufficient amount of time to cure the layer of the ultraviolet curable gel.

Provided is an electric grinder. The grinder includes a swing motor and a grinding head driven by the swing motor. The swing motor further includes a U-shaped yoke, four permanent magnets and a swing arm. Alternating magnetic poles can be generated at end faces of the two legs under control of a control circuit. The four permanent magnets are sequentially distributed on the same circumference of a circle having the fulcrum as a center. The control circuit generates alternating pulses with adjustable pulse widths, which change the moving direction of the permanent magnets alternately, so that the permanent magnets move back and forth. The swing arm drives the grinding head to reciprocate at a high speed with small swinging amplitude, thereby cleaning the body surface (skin, nails or the like) of living bodies including human beings and animals.

A manicure device comprises at least one intelligent terminal device (1), at least one measurement and drawing device (3), and at least one server (2) deployed on the Internet. At least one manicure application module (103) is installed in the intelligent terminal device (1). The manicure application module (103) can establish a connection to the server (2). The manicure application module (103) can control the measurement and drawing device (3) to complete nail pattern drawing. The manicure application module (103) can determine the health condition of a user according to nail information of the user. The manicure application module (103) can perform big data analysis for the user and push information to the user. A manicure method, a health management method, and an information pushing method based on the manicure device.