摘要:
A linear oscillator and an electric toothbrush capable of emitting a low noise and of being assembled compact are provided. The linear oscillator, which reciprocates a shaft in an axial direction thereof, includes a plunger movable together with the shaft in the axial direction of the shaft, an elastic member for applying an axially acting resilient force to the plunger, an electromagnetic driving unit operable to reciprocate the plunger in the axial direction of the shaft at a resonant frequency when an alternating current is supplied thereto, and a fixing member restricting rotation of the plunger about an axis thereof within a predetermined angle. The electric toothbrush includes the linear oscillator and a brush head attached to the shaft for use in brushing teeth.
摘要:
The present disclosure discloses a tactile vibration control system and method for a smart terminal. The system comprises: a command generator, a tactile driver, a linear resonant actuator, a sensing module, a feedback unit and a comparator; by arranging a plurality of sensors that can monitor or sense the vibrating status of the linear resonant actuator, multiple channels of the sensor signals are generated when the actuator vibrates; the feedback unit sends the sensing signals characterizing the physical quantities related to the vibration modes output by the plurality of sensors to the comparator as the feedback signal; and the comparator generates an error signal according to the feedback signal and a desired signal in the input signal and sends the error signal to the command generator so that the command generator adjust the generated initial commanding signal according to the error signal and achieves the close-loop control of the linear resonant actuator. The present disclosure can robustly estimate the status of the actuator and provide control, solve the phenomenon of residual trailing occurring when the linear resonant actuator vibrates, and achieve the technical effect of adjusting the vibrating status of the actuator in real time.
摘要:
The invention provides a vibration generator with enhanced magnetic attraction force of a coil applied to a plunger. A vibration generator S includes a coil 100, a plunger 200, and a frame 300. The plunger 200 includes a first shaft 210 movably received in the coil 100. The first shaft 210 is at least partly made of a magnetic material so as to be magnetically attractable to the coil 100 and thereby movable in the Y-direction. The plunger 200 further includes a second shaft 220 extending in a X-X' direction, being disposed on a Y'-direction side relative the coil 100 with a gap therebetween, and being at least partly made of a magnetic material to be magnetically attractable to the coil 100 and thereby movable in the Y-direction. The frame 300 is fixed to the first shaft 210 at a position on the Y-direction side relative to the coil 100, fixed to the second shaft 220 at a position on the Y'-direction side relative to the coil 100, and elastically deformable at least partly as a result of movement of the first shaft 210 and the second shaft 220.
摘要:
The invention relates to a drive device for generating an oscillating motion of at least one working unit of a small electric appliance. The drive device comprises a coil (4) for forming a magnetic field, which emanates from a first drive component (1) and acts on a second drive component (2), which is displaceably mounted in the small electric appliance, in such a way that said second drive component (2) begins to oscillate. The first drive component (1) is displaceably mounted in the small electric appliance in order to carry out an antiphase oscillating motion in relation to the second drive component (2).
摘要:
An oscillating motor 10 has a rotor rotation of about ±15° from a rest position. The rotor 11 has two salient poles 12 which face a respective permanent magnet 13 across a small air gap 14. The stator has a laminated stator core 15 supporting the magnets 13 and also two salient poles 16 each supporting a stator coil 17. The stator poles 16 confront the rotor across a small air gap 18 between the rotor poles. When no current is flowing through the coils, the rotor 11 rests in a rest position with the poles 12 aligned between the north and south poles of the magnets 13. During operation, the stator coils 17 induce like magnetic poles in the stator poles 16 which in turn induce like magnetic poles in the rotor poles 12 causing the rotor 11 to swing towards opposite magnetic poles of the permanent magnets 13. When current flows in the reverse direction, the rotor 11 swings to the opposite poles of the magnets 13. Passing alternating current through the stator coils 17 causes the rotor 11 to swing or oscillate continuously through a small angular range.
摘要:
An electromagnetic actuator comprises: a core with a coil wound around; a stator magnetically coupled at both ends of the core; a movable element that can be displaced relative to the stator; and a supporting means for supporting the movable element, wherein the stator and the movable element each have a projection and a depression perpendicular to their respective displacement directions and are placed in such a way that the projection and depression of the stator engage with the projection and depression of the movable element.
a core with a coil wound around; a stator magnetically coupled at both ends of the core; a movable element that can be displaced relative to the stator; and a supporting means for supporting the movable element, wherein the stator and the movable element each have a projection and a depression perpendicular to their respective displacement directions and are placed in such a way that the projection and depression of the stator engage with the projection and depression of the movable element.
摘要:
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.