Patents by Inventor Shintaro Saeki
Shintaro Saeki 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: 8922945Abstract: A spindle motor includes a stationary unit, a rotary unit and a bearing mechanism. The stationary unit includes a base member, a stator including a plurality of coils and a wiring substrate electrically connected to the stator. The base member includes a tubular portion, a first accommodation portion, an opening portion, a plurality of coil accommodation portions, a second accommodation portion, and at least one through-hole. The wiring substrate includes an arc portion and an extension portion. A lead wire is led out from at least one of the coils and is connected to the arc portion by soldering within the through-hole.Type: GrantFiled: February 14, 2013Date of Patent: December 30, 2014Assignee: Nidec CorporationInventors: Shintaro Saeki, Atsushi Yawata, Yoichi Sekii, Takehito Tamaoka, Hiroyuki Abe
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Patent number: 8711515Abstract: A motor includes a stator and a rotor including a disk portion, a cylindrical portion, and a stopper. The stopper includes a stopper protruding portion and is fixed to an inner surface of the cylindrical portion. The cylindrical portion includes a cylindrical portion protruding portion that opposes an outer surface of the stopper. Adhesive is included between the cylindrical portion and the stopper. A gap between an upper end portion of the outer surface of the stopper and an inner peripheral surface of the cylindrical portion protruding portion defines a first tapered gap. A gap between a lower end portion of the outer surface of the stopper and an inner peripheral surface of the cylindrical portion defines a second tapered gap. The adhesive is included in the first tapered gap and the second tapered gap. The stator includes an annular or substantially annular surface below the second tapered gap.Type: GrantFiled: February 14, 2013Date of Patent: April 29, 2014Assignee: Nidec CorporationInventors: Shintaro Saeki, Atsushi Yawata
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Patent number: 8693138Abstract: A base unit includes a stator, a wiring substrate, and a base portion. The base portion includes a tubular portion, a first recess portion surrounding the tubular portion, and first through-holes arranged within the first recess portion. The wiring substrate includes a connection portion arranged on an upper surface of the base portion and provided with lands, a power feeding portion arranged on a lower surface of the base portion, and an extension portion arranged to interconnect the connection portion and the power feeding portion. A first bonding layer is arranged between the connection portion and a bottom of the first recess portion to bond the connection portion and the bottom of the first recess portion. A second bonding layer is arranged between the power feeding portion and the lower surface of the base portion to bond the power feeding portion and the lower surface of the base portion.Type: GrantFiled: February 19, 2013Date of Patent: April 8, 2014Assignee: Nidec CorporationInventor: Shintaro Saeki
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Publication number: 20130301161Abstract: A base unit includes a stator, a wiring substrate, and a base portion. The base portion includes a tubular portion, a first recess portion surrounding the tubular portion, and first through-holes arranged within the first recess portion. The wiring substrate includes a connection portion arranged on an upper surface of the base portion and provided with lands, a power feeding portion arranged on a lower surface of the base portion, and an extension portion arranged to interconnect the connection portion and the power feeding portion. A first bonding layer is arranged between the connection portion and a bottom of the first recess portion to bond the connection portion and the bottom of the first recess portion. A second bonding layer is arranged between the power feeding portion and the lower surface of the base portion to bond the power feeding portion and the lower surface of the base portion.Type: ApplicationFiled: February 19, 2013Publication date: November 14, 2013Applicant: NIDEC CORPORATIONInventor: Shintaro SAEKI
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Publication number: 20130229727Abstract: A spindle motor includes a stationary unit, a rotary unit and a bearing mechanism. The stationary unit includes a base member, a stator including a plurality of coils and a wiring substrate electrically connected to the stator. The base member includes a tubular portion, a first accommodation portion, an opening portion, a plurality of coil accommodation portions, a second accommodation portion, and at least one through-hole. The wiring substrate includes an arc portion and an extension portion. A lead wire is led out from at least one of the coils and is connected to the arc portion by soldering within the through-hole.Type: ApplicationFiled: February 14, 2013Publication date: September 5, 2013Applicant: NIDEC CORPORATIONInventors: Shintaro SAEKI, Atsushi YAWATA
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Patent number: 8446059Abstract: A spindle motor includes a stator unit and a rotor unit supported to be rotatable with respect to the stator unit. The stator unit includes a stator, a base portion including a through hole, and a circuit board. The circuit board includes a connection portion to which a conductive wire from the stator is connected after passing through the through hole. A lower surface of the base portion includes a central region, a peripheral region, a recess portion, and a protrusion. A position of a distal portion of the protrusion is provided at a level higher than a level of a lowermost surface region of the central region and lower than a level of a bottom surface of the recess portion in a direction parallel or substantially parallel to a central axis.Type: GrantFiled: October 29, 2012Date of Patent: May 21, 2013Assignee: Nidec CorporationInventors: Atsushi Yawata, Yasuhiro Suzuki, Shintaro Saeki, Takehito Tamaoka
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Patent number: 8324771Abstract: A spindle motor includes a stator unit and a rotor unit supported to be rotatable with respect to the stator unit. The stator unit includes a stator, a base portion including a through hole, and a circuit board. The circuit board includes a connection portion to which a conductive wire from the stator is connected after passing through the through hole, and an extending portion arranged to extend from the connection portion. A lower surface of the base portion includes a recess portion arranged to accommodate the connection portion, and a groove portion arranged to extend from the recess portion to have the extending portion arranged therein. A bottom surface of the groove portion includes a protrusion portion arranged to protrude downwards.Type: GrantFiled: August 4, 2010Date of Patent: December 4, 2012Assignee: Nidec CorporationInventors: Atsushi Yawata, Yasuhiro Suzuki, Shintaro Saeki, Takehito Tamaoka
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Patent number: 8304945Abstract: A spindle motor includes a stator unit and a rotor unit. The stator unit includes a stator, a base portion, and a printed circuit board. The printed circuit board has a connection portion and an extending portion extending from the connection portion. The base portion is provided on its lower surface with a recess portion arranged to accommodate the connection portion of the printed circuit board and a groove portion in which the extending portion is arranged, the groove portion communicating with the recess portion. The groove portion has a bottom surface on which the extending portion is arranged and a slant surface gradually sloping downwards as it extends away from the bottom surface in a circumferential direction. The region in the recess portion extending from the connection portion to a boundary between the recess portion and the groove portion is covered with a cured flowable resin material.Type: GrantFiled: January 18, 2012Date of Patent: November 6, 2012Assignee: Nidec CorporationInventors: Atsushi Yawata, Yasuhiro Suzuki, Shintaro Saeki
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Patent number: 8299668Abstract: A spindle motor includes a stator unit and a rotor unit. The stator unit includes a stator, a base portion, and a printed circuit board. The printed circuit board has a connection portion and an extending portion extending from the connection portion. The base portion is provided on its lower surface with a recess portion arranged to accommodate the connection portion of the printed circuit board and a groove portion in which the extending portion is arranged, the groove portion communicating with the recess portion. The groove portion has a bottom surface on which the extending portion is arranged and a slant surface gradually sloping downwards as it extends away from the bottom surface in a circumferential direction. The region in the recess portion extending from the connection portion to a boundary between the recess portion and the groove portion is covered with a cured flowable resin material.Type: GrantFiled: January 18, 2012Date of Patent: October 30, 2012Assignee: Nidec CorporationInventors: Atsushi Yawata, Yasuhiro Suzuki, Shintaro Saeki
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Publication number: 20120113792Abstract: A spindle motor includes a stator unit and a rotor unit. The stator unit includes a stator, a base portion, and a printed circuit board. The printed circuit board has a connection portion and an extending portion extending from the connection portion. The base portion is provided on its lower surface with a recess portion arranged to accommodate the connection portion of the printed circuit board and a groove portion in which the extending portion is arranged, the groove portion communicating with the recess portion. The groove portion has a bottom surface on which the extending portion is arranged and a slant surface gradually sloping downwards as it extends away from the bottom surface in a circumferential direction. The region in the recess portion extending from the connection portion to a boundary between the recess portion and the groove portion is covered with a cured flowable resin material.Type: ApplicationFiled: January 18, 2012Publication date: May 10, 2012Applicant: NIDEC CORPORATIONInventors: Atsushi YAWATA, Yasuhiro SUZUKI, Shintaro SAEKI
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Publication number: 20120113791Abstract: A spindle motor includes a stator unit and a rotor unit. The stator unit includes a stator, a base portion, and a printed circuit board. The printed circuit board has a connection portion and an extending portion extending from the connection portion. The base portion is provided on its lower surface with a recess portion arranged to accommodate the connection portion of the printed circuit board and a groove portion in which the extending portion is arranged, the groove portion communicating with the recess portion. The groove portion has a bottom surface on which the extending portion is arranged and a slant surface gradually sloping downwards as it extends away from the bottom surface in a circumferential direction. The region in the recess portion extending from the connection portion to a boundary between the recess portion and the groove portion is covered with a cured flowable resin material.Type: ApplicationFiled: January 18, 2012Publication date: May 10, 2012Applicant: NIDEC CORPORATIONInventors: Atsushi YAWATA, Yasuhiro SUZUKI, Shintaro SAEKI
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Patent number: 8120217Abstract: A spindle motor includes a stator unit and a rotor unit. The stator unit includes a stator, a base portion, and a printed circuit board. The printed circuit board has a connection portion and an extending portion extending from the connection portion. The base portion is provided on its lower surface with a recess portion arranged to accommodate the connection portion of the printed circuit board and a groove portion in which the extending portion is arranged, the groove portion communicating with the recess portion. The groove portion has a bottom surface on which the extending portion is arranged and a slant surface gradually sloping downwards as it extends away from the bottom surface in a circumferential direction. The region in the recess portion extending from the connection portion to a boundary between the recess portion and the groove portion is covered with a cured flowable resin material.Type: GrantFiled: February 5, 2009Date of Patent: February 21, 2012Assignee: Nidec CorporationInventors: Atsushi Yawata, Yasuhiro Suzuki, Shintaro Saeki
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Publication number: 20100329104Abstract: A spindle motor includes a stator unit and a rotor unit supported to be rotatable with respect to the stator unit. The stator unit includes a stator, a base portion including a through hole, and a circuit board. The circuit board includes a connection portion to which a conductive wire from the stator is connected after passing through the through hole, and an extending portion arranged to extend from the connection portion. A lower surface of the base portion includes a recess portion arranged to accommodate the connection portion, and a groove portion arranged to extend from the recess portion to have the extending portion arranged therein. A bottom surface of the groove portion includes a protrusion portion arranged to protrude downwards.Type: ApplicationFiled: August 4, 2010Publication date: December 30, 2010Applicant: NIDEC CORPORATIONInventors: Atsushi YAWATA, Yasuhiro SUZUKI, Shintaro SAEKI, Takehito TAMAOKA
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Publication number: 20090195095Abstract: A spindle motor includes a stator unit and a rotor unit. The stator unit includes a stator, a base portion, and a printed circuit board. The printed circuit board has a connection portion and an extending portion extending from the connection portion. The base portion is provided on its lower surface with a recess portion arranged to accommodate the connection portion of the printed circuit board and a groove portion in which the extending portion is arranged, the groove portion communicating with the recess portion. The groove portion has a bottom surface on which the extending portion is arranged and a slant surface gradually sloping downwards as it extends away from the bottom surface in a circumferential direction. The region in the recess portion extending from the connection portion to a boundary between the recess portion and the groove portion is covered with a cured flowable resin material.Type: ApplicationFiled: February 5, 2009Publication date: August 6, 2009Applicant: NIDEC CORPORATIONInventors: Atsushi YAWATA, Yasuhiro SUZUKI, Shintaro SAEKI