The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a magnetic linear drive unit having first and second drive components supported for linear displacement relative to each other by a first spring device and adapted to magnetically interact with each other, and a second spring device for movably linking the drive unit to a structural element of the appliance. The first spring device is made from plastics such as long-chained PPS, whereas the second spring device is made from steel.

An oscillatory linear actuator includes an electromagnet that changes a magnetic field periodically, a first movable body, a second movable body, a holder, and a coupling spring. The first movable body is disposed on one side in the first direction of the electromagnet, includes a permanent magnet, and acts on a target object. The permanent magnet reciprocates in a second direction intersecting with the first direction by the electromagnet. The second movable body is juxtaposed to the first movable body and reciprocates in the second direction. The holder holds the first and second movable bodies to provide space between the first and second movable bodies and the electromagnet and to allow the first and second movable bodies to move in the second direction. The coupling spring is disposed on one side in the first direction of the holder and couples the first movable body and the second movable body.

A wet shaving device comprising a motor; an actuator configured to vary the speed of the motor; a rotary blade module having at least one cutting element; and a drive train assembly including at least one shaft operatively coupling the motor and the rotary blade module, wherein the at least one shaft may be configured to transfer the rotational movement of the motor to the rotary blade module.

A small appliance device, in particular a body-care appliance device, in particular a shaving apparatus device, beard-trimming device, hair-trimming device, epilating appliance device, tattooing appliance device, toothbrush device or the like, has a drive unit which comprises at least one drive element, wherein the drive element comprises at least one magnetically shape-shiftable material.

The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a magnetic linear drive unit having first and second drive components supported for linear displacement relative to each other by a spring device and adapted to magnetically interact with each other. The spring device includes at least one leaf spring having a constricted section in a central region of the leaf spring, wherein surfaces of the at least one leaf spring neighboring the constricted section are shaped convex. Such convex surfaces may have a parabolic contour.

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.

Disclosed by the present invention are a swing motor and an electronic device, the swing motor comprising a seat; at least two movable members, comprising a first movable member and a second movable member arranged to be spaced apart, wherein the first movable member and the second movable member bear opposite electromagnetic thrusts; elastic support members that correspond one-to-one to the movable members, comprising a first elastic support member and a second elastic support member, wherein the first movable member is mounted onto the seat by means of the first elastic support member, and the second movable member is mounted onto the seat by means of the second elastic support member; further comprised is a twisting elastic member, one end of the twisting elastic member being connected to the first movable member or the second movable member, and the other end being connected to an executing member.

The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a magnetic linear drive unit having first and second drive components supported for linear displacement relative to each other by a spring device and adapted to magnetically interact with each other. Said spring device includes a ring element made in one piece from plastic including at least one pair of leaf springs and a pair of cross-bars extending crosswise to said leaf springs and connecting said leaf springs to each other.

The purpose of the present invention is to provide an actuator that has a simple configuration and can stably achieve high output without the occurrence of magnetic saturation. This actuator has: a movable body provided with a cylindrical magnet section having alternately N-pole faces and S-pole faces on the peripheral surface surrounding a rotation shaft; and a fixed body provided with, pole tooth surfaces of the same number as the N-pole faces and the S-pole faces, and a coil that excites the pole tooth sections. The movable body has as a turning reference position a position at which the center of the pole tooth surfaces in the circumferential direction and the switching position of the pole faces of the magnet section face each other, and is held to the fixed body so as to be turnable back and forth around the rotation shaft in the circumferential direction.

An oscillatory linear actuator includes an electromagnetic core block including an electromagnet (electromagnetic part), and a magnetic block that holds permanent magnets so that the permanent magnets face the electromagnet with a predetermined space in between. The electromagnetic core block integrally includes a core, a coil bobbin, and a base, the core and the coil bobbin forming the electromagnet, and the base holding the core and the coil bobbin. The magnetic block includes the permanent magnets and a frame that holds the permanent magnets so as to allow the permanent magnets to oscillate freely and holds the electromagnetic core block. The frame has a guide portion that guides the electromagnetic core block to adjust a positional relation of the permanent magnets and the electromagnet, and the base is fixed to the frame inside the guide portion.