Patents by Inventor Jin Seung Yoo
Jin Seung Yoo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11469641Abstract: The present invention provides a rotor comprising: a rotor core; a plurality of magnets disposed outside the rotor core; and a molding part disposed outside the plurality of magnets, wherein the rotor core includes a plurality of guide protrusions disposed between the plurality of magnets, and the distance from the center of the rotor core to the outer surface of the molding part passing across the center of one of the guide protrusions is shorter than the distance from the same to the outer surface of the molding part passing across the center of one of the plurality of magnets.Type: GrantFiled: July 30, 2018Date of Patent: October 11, 2022Assignee: LG INNOTEK CO., LTD.Inventors: Ji Hoon Han, Il Sik Won, Jin Seung Yoo
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Publication number: 20200259391Abstract: The present invention provides a rotor comprising: a rotor core; a plurality of magnets disposed outside the rotor core; and a molding part disposed outside the plurality of magnets, wherein the rotor core includes a plurality of guide protrusions disposed between the plurality of magnets, and the distance from the center of the rotor core to the outer surface of the molding part passing across the center of one of the guide protrusions is shorter than the distance from the same to the outer surface of the molding part passing across the center of one of the plurality of magnets.Type: ApplicationFiled: July 30, 2018Publication date: August 13, 2020Applicant: LG INNOTEK CO., LTD.Inventors: JI HOON HAN, IL SIK WON, JIN SEUNG YOO
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Patent number: 8853899Abstract: A spindle motor including a base, a bearing housing supported on the base, a bearing provided within the bearing housing, a rotating shaft rotatably supported by the bearing, a stator including a core fixed to the bearing housing and coils wound around the core, a rotor including a rotor yoke fixed to the rotating shaft, and a first magnet installed on the rotor yoke facing the stator, a turntable positioned on the rotor yoke, rotating together with the rotating shaft, a center guide member coupled to the rotating shaft at an upper side of the turntable, an elastic member disposed between the turntable and the center guide member for elastically supporting the center guide member.Type: GrantFiled: July 22, 2013Date of Patent: October 7, 2014Assignee: LG Innotek Co., Ltd.Inventors: Jae Hyun Park, Jin Seung Yoo
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Publication number: 20130328419Abstract: A spindle motor including a base, a bearing housing supported on the base, a bearing provided within the bearing housing, a rotating shaft rotatably supported by the bearing, a stator including a core fixed to the bearing housing and coils wound around the core, a rotor including a rotor yoke fixed to the rotating shaft, and a first magnet installed on the rotor yoke facing the stator, a turntable positioned on the rotor yoke, rotating together with the rotating shaft, a center guide member coupled to the rotating shaft at an upper side of the turntable, an elastic member disposed between the turntable and the center guide member for elastically supporting the center guide member.Type: ApplicationFiled: July 22, 2013Publication date: December 12, 2013Applicant: LG INNOTEK CO., LTD.Inventors: Jae Hyun PARK, Jin Seung YOO
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Patent number: 8508087Abstract: A spindle motor including a base, a bearing housing supported on the base, a bearing provided within the bearing housing, a rotating shaft rotatably supported by the bearing, a stator including a core fixed to the bearing housing and coils wound around the core, a rotor including a rotor yoke fixed to the rotating shaft, and a first magnet installed on the rotor yoke facing the stator, a turntable positioned on the rotor yoke, rotating together with the rotating shaft, a center guide member coupled to the rotating shaft at an upper side of the turntable, an elastic member disposed between the turntable and the center guide member for elastically supporting the center guide member.Type: GrantFiled: December 22, 2011Date of Patent: August 13, 2013Assignee: LG Innotek Co., Ltd.Inventors: Jae Hyun Park, Jin Seung Yoo
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Patent number: 8307385Abstract: A spindle motor including a base, a bearing housing supported on the base, a bearing provided within the bearing housing, a rotating shaft rotatably supported by the bearing, a stator including a core fixed to the bearing housing and coils wound around the core, a rotor including a rotor yoke fixed to the rotating shaft, and a first magnet installed on the rotor yoke facing the stator, a turntable positioned on the rotor yoke, rotating together with the rotating shaft, a center guide member coupled to the rotating shaft at an upper side of the turntable, an elastic member disposed between the turntable and the center guide member for elastically supporting the center guide member.Type: GrantFiled: November 10, 2011Date of Patent: November 6, 2012Assignee: LG Innotek Co., Ltd.Inventors: Jae Hyun Park, Jin Seung Yoo
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Patent number: 8255937Abstract: A spindle motor is disclosed which is configured such a manner that a rotor is press-fitted into a portion of a rotor fastener corresponding to a radially thicker portion out of outer portions of the rotor fastener of a clamping device, and a portion of the rotor fastener corresponding to a relatively thinner radial portion is filled up with an adhesive to adhesively couple a case with the rotation shaft side. Consequently, even if the rotation shaft side is coupled with the case, the case is not damaged to therefore enhance the reliability of the product.Type: GrantFiled: December 28, 2009Date of Patent: August 28, 2012Assignee: LG Innotek Co., Ltd.Inventor: Jin Seung Yoo
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Publication number: 20120119597Abstract: A spindle motor including a base, a bearing housing supported on the base, a bearing provided within the bearing housing, a rotating shaft rotatably supported by the bearing, a stator including a core fixed to the bearing housing and coils wound around the core, a rotor including a rotor yoke fixed to the rotating shaft, and a first magnet installed on the rotor yoke facing the stator, a turntable positioned on the rotor yoke, rotating together with the rotating shaft, a center guide member coupled to the rotating shaft at an upper side of the turntable, an elastic member disposed between the turntable and the center guide member for elastically supporting the center guide member.Type: ApplicationFiled: November 10, 2011Publication date: May 17, 2012Inventors: Jae Hyun Park, Jin Seung Yoo
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Patent number: 8166496Abstract: Disclosed is a spindle motor comprising: an integral turntable including: a table on which a rotating body to be installed, and an inner side wall and an outer side wall formed to be recessed upwards at a portion therebetween on a lower surface of the table so that a predetermined hollow is formed, a surface of thereof being formed slant; a ball cover for covering a ball inserted into the hollow and the hollow; a rotation shaft an upper portion of which is inserted into a center of the integral turntable; a bearing supporting a lower portion of the rotation shaft; a coil formed on an outside of the rotation shaft; and a magnet formed on an outside of the coil.Type: GrantFiled: October 8, 2010Date of Patent: April 24, 2012Assignee: LG Innotek Co. Ltd.Inventor: Jin Seung Yoo
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Publication number: 20120091831Abstract: A spindle motor including a base, a bearing housing supported on the base, a bearing provided within the bearing housing, a rotating shaft rotatably supported by the bearing, a stator including a core fixed to the bearing housing and coils wound around the core, a rotor including a rotor yoke fixed to the rotating shaft, and a first magnet installed on the rotor yoke facing the stator, a turntable positioned on the rotor yoke, rotating together with the rotating shaft, a center guide member coupled to the rotating shaft at an upper side of the turntable, an elastic member disposed between the turntable and the center guide member for elastically supporting the center guide member.Type: ApplicationFiled: December 22, 2011Publication date: April 19, 2012Inventors: Jae Hyun Park, Jin Seung Yoo
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Patent number: 8082562Abstract: A spindle motor and a mounting device for mounting a disk in a spindle motor are provided. The mounting device allows for a reduced number of parts, a reduction in product cost, a disk to be smoothly slid and securely mounted to a turntable, and prevents deforming of a disk during mounting. A center guide member is formed of a plastic material, into which the rotating shaft is inserted at an upper end of the turntable, so that it is capable of rising and descending thereon. The center guide member supports the disk. A back yoke is fixed at an upper side of the center guide member on the rotating shaft, to prevent disengaging of the center guide member from the rotating shaft. An outer portion of the center guide member gradually widens toward a lower end thereof, so that the disk can be inserted more securely.Type: GrantFiled: July 23, 2010Date of Patent: December 20, 2011Assignee: LG Innotek Co., Ltd.Inventors: Jae Hyun Park, Jin Seung Yoo
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Patent number: 7979874Abstract: A spindle motor and a mounting device for mounting a disk in a spindle motor are provided. The mounting device allows for a reduced number of parts, a reduction in product cost, a disk to be smoothly slid and securely mounted to a turntable, and prevents deforming of a disk during mounting. A center guide member is formed of a plastic material, into which the rotating shaft is inserted at an upper end of the turntable, so that it is capable of rising and descending thereon. The center guide member supports the disk. A back yoke is fixed at an upper side of the center guide member on the rotating shaft, to prevent disengaging of the center guide member from the rotating shaft. An outer portion of the center guide member gradually widens toward a lower end thereof, so that the disk can be inserted more securely.Type: GrantFiled: December 21, 2006Date of Patent: July 12, 2011Assignee: LG Innotek Co., Ltd.Inventors: Jae Hyun Park, Jin Seung Yoo
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Patent number: 7971213Abstract: Disclosed is a spindle motor comprising: an integral turntable including: a table on which a rotating body to be installed, and an inner side wall and an outer side wall formed to be recessed upwards at a portion therebetween on a lower surface of the table so that a predetermined hollow is formed, a surface of thereof being formed slant; a ball cover for covering a ball inserted into the hollow and the hollow; a rotation shaft an upper portion of which is inserted into a center of the integral turntable; a bearing supporting a lower portion of the rotation shaft; a coil formed on an outside of the rotation shaft; and a magnet formed on an outside of the coil.Type: GrantFiled: August 7, 2009Date of Patent: June 28, 2011Assignee: LG Innotek Co. Ltd.Inventor: Jin Seung Yoo
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Publication number: 20110023056Abstract: Disclosed is a spindle motor comprising: an integral turntable including: a table on which a rotating body to be installed, and an inner side wall and an outer side wall formed to be recessed upwards at a portion therebetween on a lower surface of the table so that a predetermined hollow is formed, a surface of thereof being formed slant; a ball cover for covering a ball inserted into the hollow and the hollow; a rotation shaft an upper portion of which is inserted into a center of the integral turntable; a bearing supporting a lower portion of the rotation shaft; a coil formed on an outside of the rotation shaft; and a magnet formed on an outside of the coil.Type: ApplicationFiled: October 8, 2010Publication date: January 27, 2011Applicant: LG INNOTEK CO. LTD.Inventor: Jin Seung Yoo
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Publication number: 20100293563Abstract: A spindle motor and a mounting device for mounting a disk in a spindle motor are provided. The mounting device allows for a reduced number of parts, a reduction in product cost, a disk to be smoothly slid and securely mounted to a turntable, prevents deforming of a disk during mounting, and ease of mounting a disk. A center guide member is formed of a plastic material, into which the rotating shaft is inserted at an upper end of the turntable, so that it is capable of rising and descending thereon. The center guide member supports the disk. A back yoke is fixed at an upper side of the center guide member on the rotating shaft, to prevent disengaging of the center guide member from the rotating shaft. An outer portion of the center guide member gradually widens toward a lower end thereof, so that the disk can be inserted more securely.Type: ApplicationFiled: July 23, 2010Publication date: November 18, 2010Inventors: Jae Hyun Park, Jin Seung Yoo
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Patent number: 7757245Abstract: Disclosed is a spindle motor comprising: an integral turntable including: a table on which a rotating body to be installed, and an inner side wall and an outer side wall formed to be recessed upwards at a portion therebetween on a lower surface of the table so that a predetermined hollow is formed, a surface of thereof being formed slant; a ball cover for covering a ball inserted into the hollow and the hollow; a rotation shaft an upper portion of which is inserted into a center of the integral turntable; a bearing supporting a lower portion of the rotation shaft; a coil formed on an outside of the rotation shaft; and a magnet formed on an outside of the coil.Type: GrantFiled: August 1, 2007Date of Patent: July 13, 2010Assignee: LG Innotek Co. Ltd.Inventor: Jin Seung Yoo
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Publication number: 20100164335Abstract: A spindle motor is disclosed which is configured such a manner that a rotor is press-fitted into a portion of a rotor fastener corresponding to a radially thicker portion out of outer portions of the rotor fastener of a clamping device, and a portion of the rotor fastener corresponding to a relatively thinner radial portion is filled up with an adhesive to adhesively couple a case with the rotation shaft side. Consequently, even if the rotation shaft side is coupled with the case, the case is not damaged to therefore enhance the reliability of the product.Type: ApplicationFiled: December 28, 2009Publication date: July 1, 2010Inventor: Jin Seung Yoo
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Publication number: 20090307717Abstract: Disclosed is a spindle motor comprising: an integral turntable including: a table on which a rotating body to be installed, and an inner side wall and an outer side wall formed to be recessed upwards at a portion therebetween on a lower surface of the table so that a predetermined hollow is formed, a surface of thereof being formed slant; a ball cover for covering a ball inserted into the hollow and the hollow; a rotation shaft an upper portion of which is inserted into a center of the integral turntable; a bearing supporting a lower portion of the rotation shaft; a coil formed on an outside of the rotation shaft; and a magnet formed on an outside of the coil.Type: ApplicationFiled: August 7, 2009Publication date: December 10, 2009Applicant: LG INNOTEK CO. LTD.Inventor: Jin Seung Yoo
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Patent number: 7461391Abstract: Disclosed is a spindle motor comprising: an integral turntable including: a table on which a rotating body to be installed, and an inner side wall and an outer side wall formed to be recessed upwards at a portion therebetween on a lower surface of the table so that a predetermined hollow is formed, a surface of thereof being formed slant; a ball cover for covering a ball inserted into the hollow and the hollow; a rotation shaft an upper portion of which is inserted into a center of the integral turntable; a bearing supporting a lower portion of the rotation shaft; a coil formed on an outside of the rotation shaft; and a magnet formed on an outside of the coil.Type: GrantFiled: June 3, 2004Date of Patent: December 2, 2008Assignee: LG Innotex Co. Ltd.Inventor: Jin Seung Yoo
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Patent number: 7434240Abstract: Provided is a spindle motor comprising a stator and a shaft provided in the stator. A rotor is coupled with the shaft, and a turntable is connected with the shaft. The turntable has a ball container for receiving a plurality of ball, and the ball container has an inclined inner or outer wall. A ball cover is coupled with the ball container and having decelerating means. Herein, the decelerating means comprise an inclination or protrusions formed in the ball cover.Type: GrantFiled: May 12, 2004Date of Patent: October 7, 2008Assignee: LG Innotek Co., Ltd.Inventors: Jin Seung Yoo, Jae Hyun Park