Abstract: A Switched Reluctance (SR) generator having improved efficiency at low and high speed is disclosed. The SR generator includes a step-up converter for controlling an excitation voltage of an excitation capacitor capable of providing a phase winding with an excitation current. Therefore, the SR generator can control the excitation current, and can provide a phase winding with a sufficient excitation current, thereby improving efficiency. The step-up converter is arranged between a battery capable of storing generated power and the excitation capacitor, boosts a voltage of the battery, and provides the excitation capacitor with the boosted voltage. Therefore, the SR generator does not include an additional power-supply unit for a boosting function, resulting in simplification of an overall structure and reduction of a production cost.

Abstract: Disclosed is an SR (switched reluctance) generator with improved generation capability in a low-speed range. The SR generator is configured such that an inductance of a phase winding wound around a stator is increased in a low-speed range and is reduced in a high-speed range. Accordingly, a variation rate of the inductance relative to a phase angle is increased in a low-speed range, resulting in an increased output energy in a low-speed range and an improved generation efficiency. The phase winding of the stator may be configured to have a single phase. Accordingly, since the generator is configured with the reduced number of switches, it can be manufactured inexpensively and simply.

Abstract: A wafer transfer apparatus capable of improving working efficiency by simultaneously and selectively transferring a desired amount of wafers to shorten a wafer transfer time. The wafer transfer apparatus includes a plurality of wafer support members capable of supporting and transferring at least one wafer. The wafer transfer apparatus also includes a moving device connected to the wafer support members so as to move the wafer support members corresponding to a number of wafers to be transferred in such a manner that the wafer support members simultaneously transfer at least one wafer.

Abstract: Disclosed herein is an upright vacuum cleaner having a movement control grip that is capable of performing switch between automatic operation mode and manual operation mode on the movement control grip. The grip comprises a grip body, having a square section, connected to the upper end of a cleaner body while being bent to the cleaner body, upper and lower guide members vertically connected to each other while surrounding the grip body such that the upper and lower guide members can be slid along the outer surface of the grip body, a grip returning unit disposed at the grip body for resiliently returning the upper and lower guide members to their original positions, and a grip sensor unit mounted at the grip body for sensing the forward or rearward movement direction of upper and lower guide members relative to the grip body.

Abstract: The present invention discloses a suction head for a vacuum cleaner, including a casing having a suction port for sucking alien substances from the floor, an agitator rotatably installed inside the suction port, a plurality of brushes being arranged on the agitator in the length direction, an agitator driving unit for driving the agitator to perform reciprocating rotation in a predetermined angle range, and a resonance unit for resonating the reciprocating rotation of the agitator driving unit. The suction head for the vacuum cleaner improves cleaning performance of the vacuum cleaner.

Abstract: Disclosed is a motor drive control device which uses mechanical switches configured in an H-bridge shape and can protect the mechanical switches from being damaged and minimize a voltage chattering problem occurring upon switching on and off The motor drive control device includes: two relay switching units which are coupled to both sides of a motor and each of which is formed in an H-bridge shape and is connected to an output terminal of a bridge circuit; a switching unit which controls a voltage source applied to the relay switching units; and an inverter controller which first controls any one of the relay switching units and then controls the switching unit so that the motor starts to operate, and first controls the switching unit and then controls the one of the relay switching units so that the motor comes to a halt.

Abstract: A swing motor having an opening formed asymmetrically inside a stator. The swing motor is formed with an asymmetrical opening, in particular in a semicircular shape inside the stator. The opening is provided with a plurality of salient poles wound with coils. Electric current alternately flows through the coils so that a rotor, installed in the stator in a state of being spaced apart from the stator, can reciprocally move. Since the height of the stator is reduced by forming the opening asymmetrically in comparison with the case of forming the opening symmetrically, it is advantageous for minimizing the size of the product in which the swing motor is installed.

Abstract: A Switched Reluctance (SR) generator having improved efficiency at low and high speed is disclosed. The SR generator includes a step-up converter for controlling an excitation voltage of an excitation capacitor capable of providing a phase winding with an excitation current. Therefore, the SR generator can control the excitation current, and can provide a phase winding with a sufficient excitation current, thereby improving efficiency. The step-up converter is arranged between a battery capable of storing generated power and the excitation capacitor, boosts a voltage of the battery, and provides the excitation capacitor with the boosted voltage. Therefore, the SR generator does not include an additional power-supply unit for a boosting function, resulting in simplification of an overall structure and reduction of a production cost.

Abstract: Disclosed is an SR (switched reluctance) generator with improved generation capability in a low-speed range. The SR generator is configured such that an inductance of a phase winding wound around a stator is increased in a low-speed range and is reduced in a high-speed range. Accordingly, a variation rate of the inductance relative to a phase angle is increased in a low-speed range, resulting in an increased output energy in a low-speed range and an improved generation efficiency. The phase winding of the stator may be configured to have a single phase. Accordingly, since the generator is configured with the reduced number of switches, it can be manufactured inexpensively and simply.

Abstract: Disclosed herein is an upright vacuum cleaner having a movement control grip that is capable of performing switch between automatic operation mode and manual operation mode on the movement control grip. The grip comprises a grip body, having a square section, connected to the upper end of a cleaner body while being bent to the cleaner body, upper and lower guide members vertically connected to each other while surrounding the grip body such that the upper and lower guide members can be slid along the outer surface of the grip body, a grip returning unit disposed at the grip body for resiliently returning the upper and lower guide members to their original positions, and a grip sensor unit mounted at the grip body for sensing the forward or rearward movement direction of upper and lower guide members relative to the grip body.

Abstract: Disclosed is a motor drive control device which uses mechanical switches configured in an H-bridge shape and can protect the mechanical switches from being damaged and minimize a voltage chattering problem occurring upon switching on and off. The motor drive control device includes: two relay switching units which are coupled to both sides of a motor and each of which is formed in an H-bridge shape and is connected to an output terminal of a bridge circuit; a switching unit which controls a voltage source applied to the relay switching units; and an inverter controller which first controls any one of the relay switching units and then controls the switching unit so that the motor starts to operate, and first controls the switching unit and then controls the one of the relay switching units so that the motor comes to a halt.

Abstract: A substrate delivering apparatus that delivers a substrate includes a base part, a moving part mounted on the base part so as to perform linear movement and having a rotating body, a pair of frame parts mounted in parallel on opposite sides of the moving part and having heights that are adjustable, and a delivering part that is connected between the pair of frame parts and is vertically displaced according to an adjustment of the heights of the frame parts. Thus, the substrate delivering apparatus is capable of facilitating delivery of a substrate while maintaining structural stability.

Abstract: Provided are an electromagnetic shielding film capable of improving brightness, a plasma display panel (PDP) filter using the electromagnetic shielding film, a PDP device including the electromagnetic shielding film, and a method of manufacturing the electromagnetic shielding film. The electromagnetic shielding film includes a transparent substrate, an electromagnetic shielding film pattern which is formed on the transparent substrate and whose face opposite to the transparent substrate is blackened, and a black conductive layer pattern which is formed on the electromagnetic shielding film pattern.

Abstract: Traveling equipment for a cleaner comprises: a traveling motor mounted to a cleaner head part and for generating a normal torque and a reverse torque; a traveling shaft penetrated and coupled to the traveling motor and supplied with the torque of the traveling motor; traveling wheels coupled to both sides of the traveling shaft; an operation mode selection means for selectively regulating the automatic back and forth operation function and manual function; a control means for outputting a control signal upon receiving a signal selected by the operation mode selection means; and a driving means for driving the traveling motor upon receiving the control signal of the control means. By this, the user's convenience is raised and the simplicity of the components is acquired.

Abstract: A display filter for use with a plurality of microlenses in a display system includes an external light and electromagnetic (EM)-shielding portion having a photosensitive transparent resin layer with a photocatalyst, and an external light and EM-shielding pattern formed on regions of the photosensitive transparent resin layer to prevent external light from entering the display system and to prevent EM waves generated in the display device from exiting the display device, the regions corresponding to boundaries between the plurality of microlenses.

Abstract: Switched reluctance motor and an initial activating method thereof in which an aligning pulse is applied to a stator to make a rotor wait at a normal torque generating region to be driven, preventing the rotor from rotating in a direction reverse to a target rotating direction. The standby position of the rotor in the switched reluctance motor is sensed. When the standby position of the rotor corresponds to a reverse torque generating region where a torque causing rotation in a direction reverse to a target rotating direction is generated, an aligning pulse is applied to the stator, causing the rotor to rotate to a normal torque generating region where a torque causing rotation in a normal direction corresponding to the target rotating direction is generated. A driving pulse is then to the stator, causing the rotor waiting at the normal torque generating region to rotate in the normal direction.

Abstract: The present invention discloses a suction head for a vacuum cleaner, including a casing having a suction port for sucking alien substances from the floor, an agitator rotatably installed inside the suction port, a plurality of brushes being arranged on the agitator in the length direction, an agitator driving unit for driving the agitator to perform reciprocating rotation in a predetermined angle range, and a resonance unit for resonating the reciprocating rotation of the agitator driving unit. The suction head for the vacuum cleaner improves cleaning performance of the vacuum cleaner.

Abstract: Disclosed is a single-phase motor including a stator, a rotor adapted to rotate when electric power is applied to the stator, a ring-shaped magnet coupled to the rotor to rotate along with the rotor; a parking magnet for stopping the rotor within an effective torque generating region by a magnetic force effected between the ring-shaped magnet and the parking magnet upon braking the rotor, and a sensor unit for sensing a variation in the intensity of a magnetic field generated around the ring-shaped magnet during the rotation of the rotor, thereby sensing the position and speed of the rotor. In accordance with this configuration, the additional device used for an initial driving operation and subsequent operations of the motor can be relatively simple and inexpensive. As a result, there is an advantage in that the motor has an enhanced utility.

Abstract: Disclosed is a single-phase motor including a stator, a rotor adapted to rotate when electric power is applied to the stator, a ring-shaped magnet coupled to the rotor to rotate along with the rotor; a parking magnet for stopping the rotor within an effective torque generating region by a magnetic force effected between the ring-shaped magnet and the parking magnet upon braking the rotor, and a sensor unit for sensing a variation in the intensity of a magnetic field generated around the ring-shaped magnet during the rotation of the rotor, thereby sensing the position and speed of the rotor. In accordance with this configuration, the additional device used for an initial driving operation and subsequent operations of the motor can be relatively simple and inexpensive. As a result, there is an advantage in that the motor has an enhanced utility.

Abstract: Switched reluctance motor and an initial activating method thereof in which an aligning pulse is applied to a stator to make a rotor wait at a normal torque generating region to be driven, preventing the rotor from rotating in a direction reverse to a target rotating direction. The standby position of the rotor in the switched reluctance motor is sensed. When the standby position of the rotor corresponds to a reverse torque generating region where a torque causing rotation in a direction reverse to a target rotating direction is generated, an aligning pulse is applied to the stator, causing the rotor to rotate to a normal torque generating region where a torque causing rotation in a normal direction corresponding to the target rotating direction is generated. A driving pulse is then to the stator, causing the rotor waiting at the normal torque generating region to rotate in the normal direction.