SAMHONGSA CO., LTD.
|SAMHONGSA CO., LTD. Patent applications|
|Patent application number||Title||Published|
|20130342055||SPINDLE MOTOR HAVING AN ELECTROSTATIC DISCHARGE PATH - Provided is a spindle motor having an electrostatic discharge (ESD) path that can stably discharge electric charges introduced from the outside to a rotating shaft through a base plate, in a structure of forming a bearing housing by using a resin and insert-molding the base plate. The spindle motor includes: a rotor to the central portion of which one end of a rotating shaft is coupled; a bearing that rotatably supports the rotating shaft; a bearing housing that accommodates the bearing in the inside of a groove and that is made of a resin; and a base plate whose inner circumferential portion is buried and combined in the inside of the bearing housing, wherein part of the base plate is in contact with the bearing to thus discharge externally introduced static electricity through the rotating shaft, bearing, and the base plate.||12-26-2013|
|20130278085||SPINDLE MOTOR - Provided is a high-speed rotating spindle motor that achieves a smooth circulation of oil without any congestion regions of oil on an oil path taking place in a bearing housing. The spindle motor includes: a rotor; a rotating shaft whose one end is combined with the rotor; a sleeve bearing whose inner circumference rotatably supports the outer circumferential surface of the rotating shaft, and on the outer circumferential surface of which at least one oil circulation recess is provided along the lengthy direction of the sleeve bearing, and that is made of an oil-containing sintered metal; a bearing housing having a first recess accommodating the sleeve bearing and a second recess that supports the other end of the rotating shaft at a central portion of the first recess, and made of a resin; and a number of protrusions that are protrudingly formed at a gap radially spaced apart from each other around the rotating shaft so that a plurality of guide grooves through which oil passes are formed on the bottom of the first recess, and on which the bottom of the sleeve bearing is mounted.||10-24-2013|
|20110309724||MOTOR AND METHOD OF MANUFACTURING THE SAME - The present invention relates to a motor, particularly, to a spindle motor and a method of manufacturing the same, in which a base plate is integrated with a bearing housing an insert molding or insert injection method at the same time when the bearing housing is made of resin, thereby being capable of securing the verticality of a bearing and a pivot assembled with the bearing housing and the base plate, reducing the manufacturing cost, and improving the efficiency of a manufacturing process. The motor of the present invention includes a rotor, a pivot configured to have one end connected to the rotor, a bearing configured to rotatably support the outer circumferential face of the pivot, and a bearing housing made of resin and configured to comprise a first concave groove for receiving the bearing and a second concave groove for supporting the other end of the pivot.||12-22-2011|
|20100231020||GAS CYLINDER - A gas cylinder includes a spindle vertically reciprocating along a center shaft, a cylinder installed in the spindle and filled with gas, a piston member sectioning an inside of the cylinder into an upper portion and a lower portion, and a valve member sealing an upper end of the cylinder and controlling flow of the gas filling the inside of the cylinder. The valve member includes a pipe holder sealing an upper end of the cylinder, an open pin inserted in the pipe holder by penetrating the pipe holder, and a sealing member provided at an end portion of the open pin to contact the pipe holder. When the open pin is inclined by a predetermined angle with respect to the center shaft, a gap is formed between the sealing member and the pipe holder so that the flow of the gas is controlled.||09-16-2010|
|20090127947||SPINDLE MOTOR - Provided is a spindle motor on which an optical disc is put, rotated and operated. The spindle motor includes a rotor, a stator, a stop washer, and a cap. The cap is put on a thrust supporter that supports a rotation shaft of the rotor, and the cap is pressed into a bearing housing and is closely attached to the bearing housing so that the cap can be easily, closely attached to the bearing housing and due to a press fit force, the cap can be coupled to the bearing housing without formation of a gap between the bearing and the bearing housing and leakage of oil can be prevented, and a press fit force of the bearing and a press fit force of the cap itself act on the cap so that the cap can be prevented from upward separation from the bearing housing. In addition, a first stepped part is formed at a portion of a surface in which the bearing housing and the cap are closely adhered to each other, and a second stepped part is formed on the upper side of the first stepped part of the bearing housing so that, due to the first and second stepped parts, the cap can be prevented from downward separation from the bearing housing when a rotation shaft escapes from the stator downwards, and when the cap is pressed into the bearing housing, the cap does not contact an inner diameter of the bearing housing in which any stepped part is not formed so that a change of an inner diameter can be inhibited and damage of the inner diameter of the bearing housing can be presented.||05-21-2009|
Patent applications by SAMHONGSA CO., LTD.