Abstract: Disclosed is an electrically-driven skin stimulation module for forming a relatively high potential difference between power terminals of different polarities without a voltage booster circuit to make a lot of current flow through human skin such that function of iontophoresis may be remarkably improved.

Abstract: Disclosed is a skin washing apparatus using a brushless DC motor, including: a case for the skin washing apparatus; an operation unit installed outside the case, for commanding an ON/OFF operation of the skin washing apparatus and an switching operation for forward and reverse rotations in unit of a predetermined angle; a brushless DC motor installed inside the case to be operated by electric power received from the power supply so as to be rotated forwardly and reversely in unit of a predetermined angle; a control unit for outputting an electrical signal for controlling forward and reverse rotations of the brushless electric motor by a predetermined angle in response to a switching signal of the operation unit; and a skin washing brush mounted on a shaft of the brushless electric motor to be rotated forwardly and reversely according to an operation of the brushless electric motor.

Abstract: Disclosed is an electrically-driven skin stimulation module for forming a relatively high potential difference between power terminals of different polarities without a voltage booster circuit to make a lot of current flow through human skin such that function of iontophoresis may be remarkably improved.

Abstract: Disclosed is a skin washing apparatus using a brushless DC motor, including: a case for the skin washing apparatus; an operation unit installed outside the case, commanding ON/OFF operation and switching operation for forward and reverse rotations in unit of a predetermined angle; power supply installed at one end of an interior of the case; a brushless DC motor installed inside the case to be operated by electric power received from the power supply as to be rotated forwardly and reversely in unit of a predetermined angle; a control unit for outputting an electrical signal for controlling forward and reverse rotations of the brushless electric motor by a predetermined angle in response to a switching signal of the operation unit; and a skin washing brush mounted on a shaft of the brushless electric motor to be rotated forwardly and reversely according to an operation of the brushless electric motor.

Abstract: An arm for a wall mount and a wall mount having the arm are disclosed. The arm for a wall mount and a wall mount having the arm in accordance with an embodiment of the present invention can include: a frame; a first hinge axle rotatably coupled to one end of the frame; a first driving gear coupled to the first hinge axle; a first gear train installed in the frame so as to be engaged with the first driving gear; and a first motor configured to drive the first gear train, and the first gear train can include: a plurality of axles arranged on a same plane; and a plurality of reduction gears, each of which being rotatably coupled to one of the axles. With the present invention, it becomes possible to provide a wall mount that is slimmer but provides a greater driving force by using a smaller motor.

Abstract: A vibration type tilting device, according to an embodiment of the invention, which comprises a mirror holder, supporting a mirror on one side, which tilts together with the mirror such that the mirror periodically tilts light on a light path in a minute angle; a holder support part supporting the mirror holder; a driving part, which supplies driving power to the mirror holder; and a damping part comprising a gap adjustment member capable of changing the gap between a portion of the mirror holder and a portion of the holder support part, provides superior vibration characteristics, as the viscous fluid is not heated by the driving part.

Abstract: The invention relates to an optical disk drive, and more particularly, to a holder for disk drives having an improved chuck structure for seating a disk. The holder of the invention, in use, is inserted into a central opening of a disk for detachably seating the disk, and comprises: a circular hub projected upward and sized equal to the central opening of the disk; a chuck projected from a lateral portion of the hub, wherein the chuck includes a rear portion elastically connected with the hub, a peak formed in a front portion of the chuck and a lower circular face of a curvature extended downward from the peak; and a support formed integral with the hub for contacting the lower circular face of the chuck to enable circular motion of the chuck.

Abstract: The present invention generally relates to a dynamic aperture for controlling the intensity of light of projection lens, more particularly to a dynamic aperture driving apparatus and method for reducing vibration by which vibrations are minimized in spite of command for sudden location change. The dynamic aperture driving apparatus comprises rotating means, driving means, sensing means and driving control means, whereas a location control signal is characterized by minimizing vibration when the rotating means arrives at a commanded location by an increase in rising time and/or falling time of a target location signal through an RC integral circuit within the driving control means.

Abstract: A tilting apparatus and rotation apparatus. The tilting apparatus may include a support member, a tilt member attachable to and detachable from a mass and hinge-coupled to the support member about a hinge shaft, and a first elastic member interposed between the support member and the tilt member that counters a gravitational moment of the mass by elastically supporting the tilt member. The mass can be moved and rotated without being obstructed by the wall, while the gravitational moment of the mass can be countered, allowing the mass to be tilted with a small force, to provide benefits in terms of space utility and cost. The force provided by an elastic member can be adjusted according to the dimensions of the mass, so that a mass of various dimensions can be tilted without having to replace the elastic member, allowing the tilting apparatus to be manufactured in a modularized form.

Abstract: A vibration type tilting device, according to an embodiment of the invention, which comprises a mirror holder, supporting a mirror on one side, which tilts together with the mirror such that the mirror periodically tilts light on a light path in a minute angle; a holder support part supporting the mirror holder; a driving part, which supplies driving power to the mirror holder; and a damping part positioned between the mirror holder and the holder support part to reduce overshoot of the mirror holder, can improve the vibration performance of the tilting device to provide a smoother and clearer picture quality.

Abstract: A power transmission apparatus and a rotation apparatus are disclosed. A power transmission apparatus that includes: a power generating part, which includes a drive axis; a worm, which is joined to the drive axis; a worm gear, which meshes with the worm, and which includes an output axis configured to transmit power; and a friction hinge, which is joined to the output axis, and which is configured to engage and disengage a rotational force of the output axis, can provide sufficiently high deceleration and high torque, even when a low-capacity motor having a low cogging torque is used. Also, the power transmission apparatus can be made safer and less noisy for not only automatic operation by the motor but also manual operation by a user, while the gear module, motor, etch, can be protected from excessive loads.

Abstract: A display rotation apparatus includes: a support member; an arm, of which one end is coupled to the support member by way of a first hinge part interposed in-between, such that the arm is rotatable in a direction intersecting a direction of gravity; a connection member, which is coupled to the other end of the arm by way of a second hinge part interposed in-between, such that the connector member is rotatable in a direction intersecting the direction of gravity; and a movement member, which is coupled to the connection member by way of a third hinge part interposed in-between, such that the movement member is rotatable in the direction of gravity, where a drive part is coupled to each of the first hinge part, the second hinge part, and the third hinge part. The apparatus can be used to automatically rotate a display.

Abstract: A display support apparatus, which includes: a stand including a support bar and a base; an arm, of which one end is coupled to the support bar with a lift drive part interposed, such that the arm is movable in a longitudinal direction of the support bar; a connection member, which is coupled to the other end of the arm with a first hinge part interposed, such that the connector member is rotatable in a direction intersecting a direction of gravity; and a movement member, which is coupled to the connection member with a second hinge part interposed, such that the movement member is rotatable in a direction of gravity, where a rotation drive part is coupled to each of the first hinge part and the second hinge part, can rotate the display to provide a viewing angle in correspondence with the position of the viewer.

Abstract: A power transmission apparatus is disclosed. A power transmission apparatus that includes: a bracket, in which a hinge cavity is formed; a hinge axis, which is rotatably joined to the hinge cavity; a friction bearing, which is positioned between the hinge axis and an inner wall of the hinge cavity, and which is configured to provide a predetermined friction; and a gear module, which is joined to the hinge axis, and which is configured to provide a rotational force to the hinge axis, can provide sufficiently high deceleration and high torque, even when a low-capacity motor having a low cogging torque is used. Also, the power transmission apparatus can be made safer and less noisy for not only automatic operation by the motor but also manual operation by a user, while the gear module, motor, etc., can be protected from excessive loads.

Abstract: A display tilting apparatus and a display rotation apparatus. The display tilting apparatus, which tiltably supports a display to control an angle of the display, may include: a support member; a tilt member, which is attachable to and detachable from the display, and which is hinge-joined to the support member about a hinge axis; an elastic member, which is joined to the hinge axis, and which applies an elastic force in a direction opposing a gravitational moment of the display; and a driving unit, which is configured to provide a driving force such that the tilt member is tilted. Thus, a display can be moved and rotated without being obstructed by the wall to maintain an optimal viewing angle, while the gravitational moment of the display can be mitigated so that the display can be tilted with a small force, allowing benefits in terms of both space and cost.

Abstract: A tilting device for repeatedly tilting light reflected from a micro-mirror panel is disclosed. A vibration type tilting device, comprising a mirror positioned on a light path which reflects light transmitted from a digital micro-mirror panel, a mirror holder having the mirror joined to a side thereof, a coil joined to the reverse side of the mirror holder, and a magnet which generates a magnetic field passing through the coil, where portions of the mirror holder are removed to decrease the mass moment of inertia of the mirror holder, may not only provide a smooth and natural display by periodically tilting light reflected from a digital micro-mirror panel in constant time intervals but also may improve the tracking ability of the mirror and reduce residual vibration.

Abstract: A tilting device is disclosed which tilts the light reflected from a Digital Micro-mirror device by a certain angle and projects it to a screen. The tilting device, comprising a first reflector surface, a second reflector surface inclined at a predetermined angle with regard to the first reflector surface, a holder attached to the bottom of the first reflector surface and the second reflector surface, and a driving part that provides rotational force to the holder, wherein the first reflector surface and the second reflector surface are rotated by the driving part to sequentially reflect light emitted from a Digital Micro-mirror device, not only provides a smooth and natural display with invisible grids but also allows more stable and more accurate tilting.

Abstract: A display rotation apparatus and a method of joining the display rotation apparatus with a display. The display rotation apparatus, which includes a fixed body, an arm part having one end joined to the fixed body, a hinge member joined to the other end of the arm part, and a guide member rotatably joined to the hinge member, can adjust the joining point according to the center of mass of the display.