Abstract: A vibration generating apparatus may include a housing having an internal space, an elastic member mounted in the internal space, a piezoelectric element having one surface thereof mounted on the elastic member, and a mass body fixed to the other surface of the piezoelectric element by a buffering adhesive.

Abstract: There is provided a vibration generating apparatus including: a bracket having a circular plate shape; a vibration member having a lower edge portion of a central portion fixed to the bracket and having a closed curved line shape; a piezoelectric element fixed to a lower surface of the vibration member among inner surfaces of the vibration member and deformed when power is applied thereto; and a mass body fixed to the inner surfaces of the vibration member and disposed to face the piezoelectric element.

Abstract: There is provided a vibration generating apparatus including a vibration transferring member transferring vibrations to outside the vibration generating apparatus, an elastic member having one or more end portions fixed to the vibration transferring member, a mass body vibrating in response to vibrations of the elastic member, and a piezoelectric element installed on one surface of the elastic member so as to be disposed to face the mass body. A lower surface of the mass body has step parts in order to prevent contact between the mass body and the piezoelectric element. The lower surface of the mass body in which the step parts are formed and the piezoelectric element are disposed so as to be spaced apart from each other by a predetermined distance.

Abstract: There is provided an apparatus for generating vibrations including: a housing having an internal space; a direction changing member installed in the housing so as to be disposed in the internal space; a piezoelectric actuator including a piezoelectric element fixed to the direction changing member such that a horizontal deformation thereof is restrained, and deforming the direction changing member by a horizontal deformation thereof; and a vibrator fixed to the direction changing member and vertically displaced in a vertical direction according to a vertical deformation of the piezoelectric actuator.

Abstract: There is provided a vibration generation device, including: a housing including an inner space; a direction conversion member mounted in the housing to be disposed within the inner space; a piezoelectric actuator including a piezoelectric element fixed to the direction conversion member and horizontally deformed; and a vibrator fixed to the direction conversion member and disposed within the inner space and vertically displaced due to horizontal deformation of the piezoelectric actuator.

Abstract: There is provided a vibration generation device, including: a housing including an internal space; a shaft passing through the internal space in an axial direction and mounted in the housing; a bearing member vibrated in the axial direction while contacting the shaft; a yoke mounted on the bearing member; a coil mounted on an outer surface of the yoke; a magnet interacting with electromagnetic force exerted on the yoke by the coil and included in the internal space; and at least one elastic member connected between an end of the yoke in the axial direction and a surface of the housing in the axial direction.

Abstract: There is provided a vibration generating device, including: a housing including an inner space; a shaft provided in the inner space of the housing in an axial direction; a frame including a shaft hole into which the shaft is fitted; a bearing member mounted on the frame to be vibrated in a state of contact with the shaft; a vibrating part mounted on an outer surface of the frame and including a magnetic field generation part; elastic members mounted on both ends of the vibrating part in the axial direction; and a coil provided in the inner space and vibrating the vibrating part by interaction with the magnetic field generation part.

Abstract: Disclosed herein is a linear vibrator including a fixing part including a housing having a certain space formed therein and a coil disposed within the housing, a vibration part including magnets disposed to face the coil such that electromagnetic force acts with the coil, weight bodies coupled to the magnets, and a moving case accommodating the magnets and the weight bodies therein, and an elastic member connecting the fixing part to the vibration part.

Abstract: Disclosed herein is a motor structure with reduced rotation resistance of a bearing. The motor structure according to the preferred embodiment of the present invention includes: a fixing body, a shaft fixed to the fixing body, a bearing rotatably fitted on the shaft, a rotating body fixed to an outer side of the bearing and rotated by electromagnetic force, a case fixed to the fixing body and having the shaft, the bearing, and the rotating body accommodated in an inner space thereof, and a washer fixed to a top inside of the case so as to be interposed between the top inside of the case and a top surface of the bearing and contacting a part of the top area of the bearing.

Abstract: There is provided a linear vibrator including: a fixed part including a case open at one side thereof and providing an internal space therein and a bracket coupled to the case; a vibrating part disposed in the internal space and including a magnet having a hollow part and a mass body coupled to an outer peripheral surface of the magnet; an elastic member having one end coupled to the vibrating part and the other end coupled to the fixed part; a shaft having upper and lower portions fixed to one surface of the case and the bracket, respectively, and penetrating through the hollow part of the magnet; a coil provided on an outer peripheral surface of the shaft and generating electromagnetic force; and a bush disposed on the coil and concentrating the electromagnetic force generated therein in a single direction.

Abstract: There is provided a single phase induction vibration motor including: a bottom member having a shaft and a permanent magnet; a rotating member rotatably coupled to the shaft; a coil member disposed on the rotating member; and a magnetic member disposed on the rotating member to determine a stationary position of the rotating member, wherein the magnetic member is disposed to partially overlap with a region in which the permanent magnet is positioned, based on a horizontal surface of the rotating member.

Abstract: There is provided a single phase induction vibration motor including: a bottom member including a shaft and a permanent magnet; a rotating member rotatably coupled to the shaft; a coil member disposed on a portion of the rotating member; and a mass member disposed on the coil member such that weight eccentricity of the rotating member with respect to the shaft increases.

Abstract: A tilting device is disclosed. The tilting device may include: an arm, on which a tilt-shaft is formed; a tilt-base coupled to the tilt-shaft in a manner that allows tilting; a pulley rotatably coupled to the tilt-base; a wire, which is wound around the pulley, and of which either end is coupled to either side of the arm on opposite sides of the tilt-shaft; and a driving unit, which drives the pulley. An embodiment of the invention enables tilting operations using a smaller driving device, and also allows manual operations.

Abstract: A wall mount is disclosed. The wall mount can include a bracket and a frame, where the frame can be configured to support an outward portion of the bracket. The frame can be open to one side, and a guide part can be formed on the frame to guide the bracket in such a way that the bracket may be slidably inserted into the frame from the one side of the frame. In certain embodiments of the invention, the adjusting screws can be utilized to enable levelness adjustment, so that the wall mount can be installed in a more convenient manner, and the levelness of the bracket can be adjusted easily and accurately.

Abstract: A tilting device is disclosed. The tilting device may include: an arm, on which a tilt-shaft is formed; a tilt-base coupled to the tilt-shaft in a manner that allows tilting; a pulley rotatably coupled to the tilt-base; a wire, which is wound around the pulley, and of which either end is coupled to either side of the arm on opposite sides of the tilt-shaft; and a driving unit, which drives the pulley. An embodiment of the invention enables tilting operations using a smaller driving device, and also allows manual operations.

Abstract: Provided is a high-performance heat exchanger. A porous material is formed on one side of the heat exchanger. The porous material exchanges heat with a coolant pipe and/or a fin. Pores formed in the porous material improve exchanging heat with the air, thereby improving a heat exchanging performance of the heat exchanger.

Abstract: An apparatus for enhancing heat transfer efficiency of an endothermic/exothermic article includes a heat sink disposed on the endothermic/exothermic article to enhance heat transmission, a plurality of fins formed on the heat sink to enhance heat exchange, and a porous medium disposed on the fins to increase cooling efficiency of the endothermic/exothermic article by air flowing between gaps between the fins and the porous medium.