Abstract: Disclosed is a precise spatial motion device including: a motion unit including a plurality of drivers that do not contact each other and are elastically connected to each other; and a control unit that controls the drivers to drive in a six-degree-of-freedom manner and in three-dimensional space by controlling magnetic force. In accordance with the constructions of the present disclosure, the drivers are connected to each other in a non-contact and frictionless manner, and thus, driving may be performed in a six-degree-of-freedom manner and in three-dimensional space. Accordingly, position and attitude errors are not accumulated, whereby precise motion control may be achieved.

Abstract: Disclosed is a precise spatial motion device including: a motion unit including a plurality of drivers that do not contact each other and are elastically connected to each other; and a control unit that controls the drivers to drive in a six-degree-of-freedom manner and in three-dimensional space by controlling magnetic force. In accordance with the constructions of the present disclosure, the drivers are connected to each other in a non-contact and frictionless manner, and thus, driving may be performed in a six-degree-of-freedom manner and in three-dimensional space. Accordingly, position and attitude errors are not accumulated, whereby precise motion control may be achieved.

Abstract: A washing drying rack includes a plurality of securing hangers disposed at set intervals either transversely or longitudinally on a drying rack frame; a plurality of free-moving hangers which are formed below the fixed hangers in a number corresponding therewith, are link-connected with the corresponding fixed hangers, and perform a swinging motion using the fixed hangers as pivot shafts; and a drive means which generates power for the free-moving-hanger swinging motion.

Abstract: A window cleaning apparatus comprises: a first cleaning unit, which is positioned on one side of a window, having at least one built-in first magnetic module comprising a magnet; and a second cleaning unit, which is positioned on the opposite side of the window on which the first cleaning unit is positioned, having at least one built-in second magnetic module, which comprises a magnet having an opposite polarity to the magnetic module of the first cleaning unit so as to generate magnetic attraction with the first magnetic module. The second cleaning unit comprises an induction electricity generating module for generating electricity by inducing the change in the magnetic field emanating from the first magnetic module and/or the second magnetic module into voltage by means of electromagnetic induction.

Abstract: Disclosed is a laundry drying rack. The laundry drying rack in accordance with an embodiment of the present invention includes a plurality of fixing hangers disposed in parallel to each other on a drying rack frame on which laundry is hung, a plurality of oscillating links each performing a swing motion with respect to each fixing hanger as a pivot axis, a plurality of oscillating hangers each connected to a lower end of the oscillating link and shaking the laundry, hung on the fixing hanger, at the bottom of the corresponding fixing hanger, a driving unit generating power, and an electric unit providing the power generated by the driving unit as an oscillating force for the oscillating links.

Abstract: A window cleaning apparatus comprises: a first cleaning unit, which is positioned on one side of a window, having at least one built-in first magnetic module comprising a magnet; and a second cleaning unit, which is positioned on the opposite side of the window on which the first cleaning unit is positioned, having at least one built-in second magnetic module, which comprises a magnet having an opposite polarity to the magnetic module of the first cleaning unit so as to generate magnetic attraction with the first magnetic module. The second cleaning unit comprises an induction electricity generating module for generating electricity by inducing the change in the magnetic field emanating from the first magnetic module and/or the second magnetic module into voltage by means of electromagnetic induction.

Abstract: An apparatus for cleaning windows comprising: a first cleaning unit, which is positioned on one side of a window, having a built-in first magnetic module comprising a magnet or a magnetic material; and a second cleaning unit, which is positioned on the opposite side of the window on which the first cleaning unit is positioned, having a built-in second magnetic module comprising a magnet or a magnetic material so as to generate magnetic attraction with the first magnetic module of the first cleaning unit, wherein the first and second cleaning units, each attached to either sides of the window, respectively, due to the magnetic attraction, clean one or both sides of the window while moving together.

Abstract: A washing drying rack includes a plurality of securing hangers disposed at set intervals either transversely or longitudinally on a drying rack frame; a plurality of free-moving hangers which are formed below the fixed hangers in a number corresponding therewith, are link-connected with the corresponding fixed hangers, and perform a swinging motion using the fixed hangers as pivot shafts; and a drive means which generates power for the free-moving-hanger swinging motion.

Abstract: Disclosed is a laundry drying rack. The laundry drying rack in accordance with an embodiment of the present invention includes a plurality of fixing hangers disposed in parallel to each other on a drying rack frame on which laundry is hung, a plurality of oscillating links each performing a swing motion with respect to each fixing hanger as a pivot axis, a plurality of oscillating hangers each connected to a lower end of the oscillating link and shaking the laundry, hung on the fixing hanger, at the bottom of the corresponding fixing hanger, a driving unit generating power, and an electric unit providing the power generated by the driving unit as an oscillating force for the oscillating links.