Abstract: An auto-focusing lens of a camera includes a lens unit (11), a permanent magnet (12) being fixedly mounted around the lens unit to move with the lens unit, a first coil seat (15a) arranged on a first side of the magnet with a first winding (14a) wound thereon, and a second coil seat (15b) arranged on a second side opposite to the first side of the magnet with a second winding (14b) wound thereon. The first and second windings and the first and second coil seats are provided for establishing magnetic fields when electric currents are applied to the first and second windings. The magnetic fields interact with the magnetic field of the permanent magnet to drive the lens unit into movement between its front focus point (A) and its rear focus point (B).

Abstract: An auto-focusing camera includes a lens mount (10), a lens unit (50) received in the lens mount, and a motor for driving the lens unit. The lens mount has a pair of connecting pins (22, 21) extending therethrough for electrically connecting to a printed circuit board arranged under the lens mount. The motor includes at least one coil seat (30, 40) with coil (35, 45) wound thereon, and a permanent magnet (55) being fixedly mounted around the lens unit to move with the lens unit. The at least one coil seat includes a pair of mounting pins (32, 43, 33, 41) for guiding two ends of the coils to be connected to the two connecting pins of the lens mount.

Abstract: A liquid pump (100) includes a top cover (40), a back plate (50), and a spacing member (60). The spacing member is sandwiched between the top cover and the back plate, thereby dividing an interior of the liquid pump into a fluid chamber (14) and a receiving cavity (16) isolated and hermetical from the fluid chamber. The fluid chamber is disposed between the top cover and the spacing member for receiving therein a fluid dynamic bearing (70) and a rotor (20) which drives working fluid to enter and leave the liquid pump. The receiving cavity is disposed between the spacing member and the back plate for receiving therein a stator (30) which drives the rotor to rotate in respective to the bearing.

Abstract: A vibration stator includes a housing (30), a stator (10) received in the housing and a rotor (20) being rotatably disposed in the stator. The stator includes two claw-pole assemblies (11) arranged back-to-back and located at two opposite ends of the vibration motor symmetrically. Each claw-pole assembly includes two yokes (10a, 10b) each having a plurality of pole teeth (16a, 16b) extending therefrom and being intermeshed with those of the other yoke. The rotor includes a permanent magnet (26) and an eccentric weight (24) connected with the permanent magnet.

Abstract: An auto-focusing camera includes a lens mount (10), a lens unit (50) received in the lens mount, and a motor for driving the lens unit. The lens mount has a pair of connecting pins (22, 21) extending therethrough for electrically connecting to a printed circuit board arranged under the lens mount. The motor includes at least one coil seat (30, 40) with coil (35, 45) wound thereon, and a permanent magnet (55) being fixedly mounted around the lens unit to move with the lens unit. The at least one coil seat includes a pair of mounting pins (32, 43, 33, 41) for guiding two ends of the coils to be connected to the two connecting pins of the lens mount.

Abstract: An auto-focusing lens of a camera includes a lens unit (11), a permanent magnet (12) being fixedly mounted around the lens unit to move with the lens unit, a first coil seat (15a) arranged on a first side of the magnet with a first winding (14a) wound thereon, and a second coil seat (15b) arranged on a second side opposite to the first side of the magnet with a second winding (14b) wound thereon. The first and second windings and the first and second coil seats are provided for establishing magnetic fields when electric currents are applied to the first and second windings. The magnetic fields interact with the magnetic field of the permanent magnet to drive the lens unit into movement between its front focus point (A) and its rear focus point (B).

Abstract: An electric fan includes a frame (10) having a central tube (11) extending therefrom, a bearing (30) received in the central tube, a stator (50) mounted around the central tube, and a rotor (70) being rotatably supported by the bearing received in the central tube. The frame defines an air inlet (19) and an air outlet (17) at two different sides thereof. The stator includes two poles (51, 53) and a tube (55) arranged between the poles. Each pole includes a basewall (511, 531) and a sidewall (513, 533) extending from the basewall. Each sidewall includes an upper portion adjacent to the air inlet expanding radially along a direction from the air inlet to the air outlet of the electric fan.

Abstract: A liquid pump (100) includes a top cover (40), a back plate (50), and a spacing member (60). The spacing member is sandwiched between the top cover and the back plate, thereby dividing an interior of the liquid pump into a fluid chamber (14) and a receiving cavity (16) isolated and hermetical from the fluid chamber. The fluid chamber is disposed between the top cover and the spacing member for receiving therein a fluid dynamic bearing (70) and a rotor (20) which drives working fluid to enter and leave the liquid pump. The receiving cavity is disposed between the spacing member and the back plate for receiving therein a stator (30) which drives the rotor to rotate in respective to the bearing.

Abstract: A magnetic repulsion-actuated magnetic bearing is constructed to include a stator, two magnetic repulsion modules mounted inside the stator, a rotor having two annular permanent magnets at the ends corresponding to the two magnetic repulsion modules. A magnetic force of repulsion is produced between equiangularly spaced permanent magnets of the magnetic repulsion modules and the annular permanent magnets of the rotor to keep the rotor radially in position automatically upon power failure. A controller is electrically connected to windings of the magnetic repulsion modules for controlling the current of the windings to change the intensity of magnetic force so as to further control the radial magnetic force of repulsion of the magnetic repulsion actuators, keeping the radial bearing stiffness during rotation of the rotor.