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公开(公告)号：US20220319547A1
公开(公告)日：2022-10-06
申请号：US17711039
申请日：2022-04-01
Applicant: NIDEC CORPORATION
Inventor： Kazuhiro SATO , Masahiro IMAHORI , Junya MIZUKAMI , Shingo SUGINOBU , Tomoki UCHIBORI
Abstract: A spindle motor includes a base, a shaft arranged on the base and extending in a vertical direction, a stator having a coil defined by a wound conductive wire and arranged on an upper surface of the base, and a rotor rotatably supported around the shaft. The base has a through hole that penetrates the base from the upper surface to a lower surface. The conductive wire is drawn out to the lower surface side through the inside of the through hole. The through hole is sealed by a sealing material. The through hole includes a columnar lower column body and a columnar upper column body. The lower column body is arranged on the lower surface side of the base. A cross-sectional area of the upper column body orthogonal to an axial direction is smaller than a cross-sectional area of the lower column body orthogonal to the axial direction.
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公开(公告)号：US20190011692A1
公开(公告)日：2019-01-10
申请号：US15725381
申请日：2017-10-05
Applicant: Nidec Corporation
Inventor： Junya MIZUKAMI
Abstract: This rotary drive apparatus is arranged to cause incoming light coming from a light source to be reflected, and rotate resulting reflected light, and includes a motor including a rotating portion arranged to rotate about a central axis extending in a vertical direction; and a flywheel supported by the rotating portion, and caused by the rotating portion to rotate about the central axis. The flywheel includes a lens arranged to allow the reflected light to pass therethrough; a lens frame arranged to be in contact with at least a portion of a peripheral portion of the lens; and a main body arranged to support the lens or the lens frame. The main body includes an outer cylindrical portion arranged to define at least a portion of an outer circumferential surface of the main body, and an accommodating portion in which the lens frame is arranged. At least a portion of the lens frame and at least a portion of the main body are arranged to have a first adhesion portion therebetween. At least a portion of the lens is arranged radially between the main body and the lens frame.
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公开(公告)号：US20160053769A1
公开(公告)日：2016-02-25
申请号：US14820675
申请日：2015-08-07
Applicant: Nidec Corporation
Inventor： Junya MIZUKAMI , Hideki NISHIMURA , Yoshito NISHITANI , Michihiro ITO , Naohiro NAGASAWA
IPC: F04D29/22 , F04D29/42 , F04D29/043 , F04D1/00 , F04D13/06
CPC classification number: F04D29/186 , F04D3/00 , F04D5/001 , F04D11/00 , F04D13/0633 , F04D29/0476
Abstract: A pump a shaft portion arranged to extend in a vertical direction; a rotor portion arranged to surround an outer circumference of the shaft portion, and including a magnet; and a housing joined to the shaft portion, and arranged to contain the rotor portion. The housing includes a stator arranged opposite to the magnet; a rotor accommodating portion arranged to accommodate the rotor portion; and an inlet and an outlet each of which is arranged to pass through a portion of the rotor accommodating portion. A surface of at least one of the rotor portion, the shaft portion, and the rotor accommodating portion includes at least one first dynamic pressure groove arranged to support rotation of the rotor portion. A surface of at least one of the rotor portion and the rotor accommodating portion includes at least one second dynamic pressure groove arranged to transfer a fluid from the inlet to the outlet. The rotor portion includes a through hole arranged to pass therethrough in an axial direction.
Abstract translation: 泵，轴部，其布置成在垂直方向上延伸; 转子部分，其布置成围绕所述轴部分的外圆周，并且包括磁体; 以及与所述轴部接合的壳体，并且设置成容纳所述转子部。 壳体包括与磁体相对布置的定子; 转子容纳部分，其布置成容纳转子部分; 以及各自设置成通过转子容纳部的一部分的入口和出口。 转子部分，轴部分和转子容纳部分中的至少一个的表面包括布置成支撑转子部分的旋转的至少一个第一动压槽。 转子部分和转子容纳部分中的至少一个的表面包括布置成将流体从入口传送到出口的至少一个第二动压槽。 转子部分包括沿轴向穿过的通孔。
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公开(公告)号：US20190146208A1
公开(公告)日：2019-05-16
申请号：US16147909
申请日：2018-10-01
Applicant: Nidec Corporation
Inventor： Junya MIZUKAMI
Abstract: A rotary drive apparatus that rotates while reflecting light emitted from a light source includes a motor, a flywheel supported by a rotating portion of the motor, and a plate-shaped mirror. The mirror is fixed to the flywheel with adhesives located at corner portions of the mirror and spaced apart from one another along end sides of the mirror. Thus, the mirror is fixed to the flywheel with the adhesives, and distortion of the mirror due to curing of the adhesives is reduced or prevented.
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公开(公告)号：US20190094526A1
公开(公告)日：2019-03-28
申请号：US16104223
申请日：2018-08-17
Applicant: Nidec Corporation
Inventor： Yoichi SEKII , Junya MIZUKAMI
Abstract: A rotary drive apparatus rotates a flywheel that holds a mirror and a lens, and includes a motor and the flywheel. The flywheel is rotatable about a central axis extending in a vertical direction through the motor. The flywheel includes an accommodating portion in which the lens is located. The lens includes a base portion including a light-transmitting portion that allows reflected light to pass therethrough, a first contact portion contactable with the accommodating portion on one of upstream and downstream sides of the base portion with respect to the direction of travel of the reflected light, and a second contact portion contactable with the accommodating portion on another one of the upstream and downstream sides of the base portion with respect to the direction of travel of the reflected light. At least one of the first and second contact portions is a projection that projects from the base portion.
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Patent Agency Ranking
公开(公告)号：US20190011693A1
公开(公告)日：2019-01-10
申请号：US15725383
申请日：2017-10-05
Applicant: Nidec Corporation
Inventor： Junya MIZUKAMI
Abstract: A rotary drive apparatus is arranged to cause incoming light coming from a light source to be reflected, and rotate resulting reflected light, and includes a motor including a rotating portion arranged to rotate about a central axis extending in a vertical direction; and a flywheel supported by the rotating portion, and caused by the rotating portion to rotate about the central axis. The flywheel includes a lens arranged to allow the reflected light to pass therethrough; and a main body arranged to directly support the lens, or indirectly support the lens through a lens frame arranged to be in contact with at least a portion of a peripheral portion of the lens. At least one of the lens and the main body includes at least one projecting portion arranged to project toward another one of the lens and the main body. The other one of the lens and the main body includes at least one recessed portion into which the corresponding projecting portion is fitted.
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公开(公告)号：US20180217372A1
公开(公告)日：2018-08-02
申请号：US15663882
申请日：2017-07-31
Applicant: Nidec Corporation
Inventor： Junya MIZUKAMI
IPC: G02B26/10
CPC classification number: G02B26/105 , G02B7/1821 , G02B26/0816
Abstract: This rotary drive apparatus is arranged to rotate a mirror arranged to reflect incoming light coming from a light source, and includes a motor including a rotating portion arranged to rotate about a central axis extending in a vertical direction; and a flywheel including the mirror, and arranged to rotate while being supported by the motor. The flywheel further includes a tubular upper support member, and a lower support member having at least a portion thereof arranged below the upper support member. The mirror has at least a portion thereof arranged on the central axis, and is fixed while being in contact with at least a portion of a lower surface of the upper support member and at least a portion of an upper surface of the lower support member.
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公开(公告)号：US20180180870A1
公开(公告)日：2018-06-28
申请号：US15725364
申请日：2017-10-05
Applicant: Nidec Corporation
Inventor： Junya MIZUKAMI
CPC classification number: G02B26/0816 , F21S10/063 , F21V14/04 , F21V29/677 , G02B7/008 , G02B7/1815 , G02B26/105 , H02K7/02 , Y02E60/16
Abstract: This rotary drive apparatus is arranged to rotate a mirror which reflects incident light coming from a light source, and includes a motor including a rotating portion arranged to rotate about a central axis extending in a vertical direction; a flywheel including the mirror, and rotatably held by the rotating portion; and an impeller directly or indirectly fixed to the rotating portion. The impeller includes a tubular blade support portion arranged to extend along the central axis, and a plurality of blades arranged in a circumferential direction on an outer circumferential surface of the blade support portion. The blade support portion includes an impeller through hole arranged to pass through the blade support portion in an axial direction. The blades are arranged between the light source and the motor. The impeller through hole is arranged to define a light path over which the incident light travels.
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公开(公告)号：US20180054102A1
公开(公告)日：2018-02-22
申请号：US15641392
申请日：2017-07-05
Applicant: Nidec Corporation
Inventor： Junya MIZUKAMI , Yoichi SEKII , Takeyuki SHUTO , Naohiro NAGASAWA
Abstract: This motor includes a stationary portion including a stator; and a rotating portion supported to be rotatable about a central axis extending in a vertical direction with respect to the stationary portion, and including a shaft arranged to extend along the central axis. The stationary portion includes a bearing arranged to rotatably support the shaft, and a base portion arranged to hold the stator. The rotating portion includes a rotor hub portion arranged to extend in an annular shape around the shaft; a magnet directly or indirectly fixed to the rotor hub portion, and arranged opposite to the stator; a flywheel arranged axially above the rotor hub portion; and a seal portion arranged to have a thickness smaller than the thickness of the magnet. At least a portion of an outer circumferential surface of the rotor hub portion is a metal surface. The metal surface has a reflectivity higher than the reflectivity of an outer circumferential surface of the flywheel and the reflectivity of a surface of the seal portion. The metal surface is covered with the seal portion.
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公开(公告)号：US20160153490A1
公开(公告)日：2016-06-02
申请号：US14822939
申请日：2015-08-11
Applicant: Nidec Corporation
Inventor： Kazuyoshi SAITO , Mitsuo KODAMA , Junya MIZUKAMI , Yuichi SHIGEMATSU
CPC classification number: F16C17/107 , F16C32/0633 , F16C32/0659 , F16C33/107 , F16C2240/30 , F16C2370/12 , G11B19/2036 , H02K5/1675 , H02K7/086
Abstract: A fluid bearing apparatus includes a stationary member and a rotating member. A bearing surface of the stationary member and a bearing surface of the rotating member are arranged opposite to each other with a minute gap intervening therebetween. A lubricating fluid is arranged in the minute gap. At least one of the bearing surfaces includes a dynamic pressure groove, and a plurality of striations defined in a bottom portion of the dynamic pressure groove. Each of the dynamic pressure groove and the striations is arranged to extend in a direction at an angle greater than 0° to a circumferential direction. An angle defined between each striation and the circumferential direction is equal to or smaller than an angle defined between the dynamic pressure groove and the circumferential direction. Thus, an improvement in a force of dynamic pressure at the dynamic pressure groove is achieved.
Abstract translation: 流体轴承装置包括固定构件和旋转构件。 静止构件的支承面和旋转构件的支承面相互间配置有微小的间隙。 润滑流体布置在微小间隙中。 轴承表面中的至少一个包括动压槽和限定在动压槽的底部中的多个条纹。 动压槽和条纹中的每一个布置成沿与圆周方向大于0°的角度的方向延伸。 每个条纹和圆周方向之间限定的角度等于或小于在动态压力槽和圆周方向之间限定的角度。 因此，能够实现动压槽的动压力的提高。
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