Abstract:
A cooling fan includes a fan housing and a stator and an impeller received in the fan housing. The fan housing includes a frame and a mounting portion located in the frame. The stator is received in the frame and mounted to the mounting portion. The impeller is mounted to the stator and rotatable with respect to the stator. The impeller includes a hub and a plurality of blades extending radially and outwardly from the hub. Each of the blades includes an inner end connected with the hub and an outer end distant from the hub. Each of the blades forms a tab on the outer end at the end surface.
Abstract:
An exemplary sleeve bearing system includes a bearing housing, a sleeve bearing and a resilient washer. The bearing housing defines a receiving hole therein. The receiving hole has a first diameter. The sleeve bearing has a second diameter which is slightly less than the first diameter, and the sleeve bearing is received in the receiving hole of the bearing housing. The resilient washer is received in the receiving hole of the bearing housing and is fitted around the sleeve bearing. The resilient washer is sandwiched between the bearing housing and the sleeve bearing and resiliently abuts an outer circumferential surface of the sleeve bearing to thereby mount the sleeve bearing in the receiving hole of the bearing housing.
Abstract:
A bearing structure which is cooperated with a shaft and is disposed in a bearing tube comprises an oil bearing and a cylindrical sealing member. The oil bearing has an axial hole. The shaft passes through the axial hole. The cylindrical sealing member covers a top surface and at least a portion of a sidewall of the oil bearing. The cylindrical sealing member has a through hole defined in its center. The shaft passes through the through hole.
Abstract:
A motor control device includes a rotation speed control circuits a voltage transforming circuit, a buffering circuit and a driving circuit. The rotation speed control circuit provides a rotation speed control signal. The voltage transforming circuit is electrically connected to the rotation speed control circuit and transforms the rotation speed control signal to a speed control voltage signal. The buffering circuit, electrically connected to the voltage transforming circuit, receives the speed control voltage signal and delays or buffers output of the speed control voltage signal. The driving circuit, electrically connected to the buffering circuit, receives the speed control voltage signal from the buffering circuit and generates a driving signal according to the speed control voltage signal so as to control the operation of the motor.
Abstract:
A fan includes a motor and an impeller. The motor drives the impeller to rotate and includes a base, a bearing, a stator, a rotor and a magnetic element. The central portion of the base is extended to form a bushing for accommodating the bearing therein. The stator telescopes around the bushing. The rotor is disposed corresponding to the stator and has a shaft passing through the bearing. The magnetic element is disposed at the bottom of the bushing and located adjacent to one end of the shaft.
Abstract:
A control system for controlling a keyboard-video-mouse (KVM) switch interconnecting among at least one set of keyboard, video, mouse of a console and a plurality of computers comprises a first memory and at least one embedded module. The first memory stores a plurality of control instructions to control operational signals for the keyboard-video-mouse switch. The embedded module comprises a core unit, a second memory and a decoder. The core unit executes the control instructions fetched from the first memory to control the keyboard, video, mouse signals from or to the keyboard-video-mouse switch. The second memory is accessed by the core unit to load and store at least an operational signal through a communication among the console and the computers. The decoder coupled to the core unit and the first memory respectively decodes the control instructions stored in the first memory.
Abstract:
A motor rotor includes a magnetic yoke and a rubber magnet located within the magnetic yoke. At least one pattern is formed on a surface of the rubber magnet, which faces the magnetic yoke. The manufacturing method of the motor rotor is to provide a rubber magnet having flat surfaces, and at least one pattern is formed on a surface of the rubber magnet. The rubber magnet is curved to correspond with the inner surface of the magnetic yoke by the way that the patterned surface of the rubber magnet faces outside. The rubber magnet is put inside the magnetic yoke.
Abstract:
A method for reducing vibration of a motor having a carrier interface. First, a rotor having a carrier interface and a shaft is provided. A rough sheet is mounted to the carrier interface to fix the object disposed thereon. Then, the rough sheet is polished by a polisher along a direction perpendicular to axis of the shaft. Finally, the rotor is combined with a stator so as to form a motor.
Abstract:
The invention is a connector, which has an insulating housing, a female terminal, a guide needle and a waterproof structure. The insulating housing had a housing, a first and a second insulating sleeves. The first and the second insulating sleeves, and the waterproof structure are disposed in the housing. The first insulating sleeve is mounted with the second insulating sleeve in order to form a compartment space. The first insulating sleeve includes at least three fixing portions. The female terminal has a clamping portion, a securing portion and a guiding needle clamping portion. The clamping portion has at least three tighten portion and at least three slits, which forms at least three blades. The securing portion includes at least three convex portions, which disposed corresponding to the fixing portions. The guide needle buckles with the guiding needle clamping portion. The waterproof structure disposed against the second insulating sleeve.
Abstract:
An oil sealing structure of a motor includes a cover and at least one sealing element. The motor has a shaft, a fluid bearing and a bushing. The fluid bearing mounts to the shaft and is accommodated in the bushing. The cover is disposed around the shaft and is connected with an opening of the bushing. The sealing element is disposed around the shaft and between the fluid bearing and the cover. A fan and a motor including the above-mentioned oil sealing structure are also disclosed.