Provided is a cleaning device for personal cleaning and care, comprising a cleaning device housing detachably connected to a handle housing, a bracket for supporting the cleaning device, a cleaning element carrier and cleaning elements distributed on the cleaning element carrier, a passive assembly, and a cleaning device transducer. The cleaning device transducer comprises at least two transducer elastic elements; one end of each transducer elastic element is fixedly connected to a corresponding transducer elastic element retainer, and the other end of each transducer elastic element is fixedly connected to an transmission arm of the transducer bracket coupling elastic element; wherein a cleaning device having a natural vibration frequency f.sub.natural is constituted utilizing the bending strain of an elastic material, such that the natural frequency f.sub.natural of the cleaning device is in the range of 100 Hz to 400 Hz, and the relationship between the natural frequency f.sub.natural and the frequency f.sub.0 of the electromagnetic force produced by the drive coil in the handle satisfies: 0.85f.sub.0<f.sub.natural<1.05f.sub.0. The present cleaning device has a compact structure and an aesthetically pleasing shape, rotates steadily, and produces little noise.

A linear vibration motor comprises housing, a mass block, and elastic pieces. The elastic pieces connect the mass block and the housing to provide an elastic force in Z axis direction such that the mass block performs a movement up and down. The elastic pieces are provided with two vibration arms, and the two vibration arms are symmetrical about the X axis when rotating 180 degrees around the X axis. The elastic pieces are S-shaped or inverted Z-shaped, or formed by the combination of two V-shaped vibration arms. The elastic pieces have two or four elastic pieces, and disposed on symmetrical two sides of the mass block.

A holder is used while attached to a chassis of a vibration generator that moves a vibrator to generate a vibration. The holder includes a vibrator retention unit retaining the vibrator, a fixed unit fixed to the chassis, and an arm. The arm connects the fixed unit and the vibrator retention unit, and the arm supports the vibrator retention unit while the vibrator retention unit can be displaced with respect to the fixed unit. The fixed unit, the arm, and the vibrator retention unit are integrally formed using resin.

A holder is used while attached to a chassis of a vibration generator that moves a vibrator to generate a vibration. The holder includes a vibrator retention unit retaining the vibrator, a fixed unit fixed to the chassis, and an arm. The arm connects the fixed unit and the vibrator retention unit, and the arm supports the vibrator retention unit while the vibrator retention unit can be displaced with respect to the fixed unit. The fixed unit, the arm, and the vibrator retention unit are integrally formed using resin.

A holder is used while attached to a chassis of a vibration generator that moves a vibrator to generate a vibration. The holder includes a vibrator retention unit retaining the vibrator, a fixed unit fixed to the chassis, and an arm. The arm connects the fixed unit and the vibrator retention unit, and the arm supports the vibrator retention unit while the vibrator retention unit can be displaced with respect to the fixed unit. The fixed unit, the arm, and the vibrator retention unit are integrally formed using resin.

A holder is used while attached to a chassis of a vibration generator that moves a vibrator to generate a vibration. The holder includes a vibrator retention unit retaining the vibrator, a fixed unit fixed to the chassis, and an arm. The arm connects the fixed unit and the vibrator retention unit, and the arm supports the vibrator retention unit while the vibrator retention unit can be displaced with respect to the fixed unit. The fixed unit, the arm, and the vibrator retention unit are integrally formed using resin.

Disclosed are a method and an apparatus for converting a musical element so as to provide a vibration in an electronic device. According to various embodiments of the present invention, an electronic device may comprise: a display; a vibration generation apparatus for generating a vibration; and a processor functionally connected to the display and the vibration generation apparatus, wherein the processor is configured to: select multiple frequencies, using a musical element; set at least one vibration on the basis of the selected multiple frequencies; and generate a vibration pattern on the basis of the set vibration. Various elements are possible.

A magnetically driving apparatus includes two magnetic units and a driving unit. Each of the magnetic units includes a magnet. The N-poles or S-poles of the magnetic units are directed to each other. The driving unit is located between the magnetic units. Each of the driving units includes a magnetically permeable element movable between an active position for magnetically attracting the magnets and an idle position clear of the magnetism of the magnets to allow the magnets to magnetically repulse each other.

A magnetically driving apparatus includes two magnetic units and a driving unit. Each of the magnetic units includes a magnet. The N-poles or S-poles of the magnetic units are directed to each other. The driving unit is located between the magnetic units. Each of the driving units includes a magnetically permeable element movable between an active position for magnetically attracting the magnets and an idle position clear of the magnetism of the magnets to allow the magnets to magnetically repulse each other.

A magnetic motor comprising a timing controller and at least one cylinder having a piston, an upper cylinder head, and a lower cylinder head is disclosed. The piston, upper cylinder head, and lower cylinder head each include a set of one or more magnets characterized by a common pattern. The one or more magnets in the piston, the upper cylinder head, and lower cylinder head comprise poles oriented parallel to the longitudinal axis of the cylinder. The piston oscillates linearly in the cylinder but does not rotate, while the upper and lower cylinder heads rotate in place but do not move linearly. The timing controller is configured to vary the phase between longitudinal oscillation of the piston and angular oscillation of the upper and lower cylinder heads to optimally drive the piston up and down in the cylinder.