Patents by Inventor Mikio Umehara
Mikio Umehara 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).
-
Publication number: 20200304004Abstract: In accordance with one aspect of the present disclosure, a vibration generating device includes a protruding part; a base provided with the protruding part and formed of a magnetic body; an annular coil surrounding the protruding part; a plate facing the base and formed of a magnetic body; and an elastic member supporting the plate with respect to the base. The plate and the base constitute magnetic circuit.Type: ApplicationFiled: June 11, 2020Publication date: September 24, 2020Inventors: Mikio UMEHARA, Yutaka KAMOGI
-
Patent number: 10780457Abstract: A vibrator-mounted holder is attached to a casing of a vibration generator which moves a vibrator to generate a vibration when used. The vibrator-mounted holder includes a vibrator, a vibrator retention unit retaining the vibrator, a fixing unit fixed to a casing, and an arm. The vibrator includes a magnet having a plate shape parallel to a horizontal surface and a yoke arranged on the magnet. The arm connects the fixing unit to the vibrator retention unit, and supports the vibrator retention unit in a manner that the vibrator retention unit is displaceable with respect to the fixing unit. The yoke has a projecting portion which is projected downward and fixed to the vibrator retention unit. The arm is connected to a portion, at which the projecting portion is arranged, within the vibrator retention units.Type: GrantFiled: May 21, 2019Date of Patent: September 22, 2020Assignee: MINEBEA MITSUMI INC.Inventor: Mikio Umehara
-
Patent number: 10727726Abstract: In accordance with one aspect of the present disclosure, an electronic device includes a housing, a contact member attached to the housing, and a vibration generating device. The vibration generating device is fixed to the contact member or the housing. A gap is formed between a surface of the vibration generating device facing the housing and a surface of the housing facing the vibration generating device.Type: GrantFiled: November 27, 2017Date of Patent: July 28, 2020Assignee: MINEBEA MITSUMI INC.Inventors: Mikio Umehara, Yutaka Kamogi
-
Patent number: 10715020Abstract: In accordance with one aspect of the present disclosure, a vibration generating device includes a protruding part; a base provided with the protruding part and formed of a magnetic body; an annular coil surrounding the protruding part; a plate facing the base and formed of a magnetic body; and an elastic member supporting the plate with respect to the base. The plate and the base constitute magnetic circuit.Type: GrantFiled: November 27, 2017Date of Patent: July 14, 2020Assignee: MINEBEA MITSUMI INC.Inventors: Mikio Umehara, Yutaka Kamogi
-
Publication number: 20190363499Abstract: A motor including: a frame having a width of 10 millimeters or less and an inner surface; an annular magnet attached to the inner surface of the frame; a bracket provided at the frame; a columnar brush formed of carbon and having an outer peripheral surface; a commutator contacting with the outer peripheral surface of the brush; and an elastic member supporting the brush to the bracket, in which at least a part of the elastic member is inside the brush.Type: ApplicationFiled: May 20, 2019Publication date: November 28, 2019Inventors: Mikio UMEHARA, Atsushi OMURA, Kazuaki SATO
-
Publication number: 20190308218Abstract: A vibrator-mounted holder is attached to a casing of a vibration generator which moves a vibrator to generate a vibration when used. The vibrator-mounted holder includes a vibrator, a vibrator retention unit retaining the vibrator, a fixing unit fixed to a casing, and an arm. The vibrator includes a magnet having a plate shape parallel to a horizontal surface and a yoke arranged on the magnet. The arm connects the fixing unit to the vibrator retention unit, and supports the vibrator retention unit in a manner that the vibrator retention unit is displaceable with respect to the fixing unit. The yoke has a projecting portion which is projected downward and fixed to the vibrator retention unit. The arm is connected to a portion, at which the projecting portion is arranged, within the vibrator retention units.Type: ApplicationFiled: May 21, 2019Publication date: October 10, 2019Applicant: MINEBEA CO., LTD.Inventor: Mikio UMEHARA
-
Patent number: 10432074Abstract: A vibrator unit capable of being attached to a housing of a vibration generator includes a vibrator including a magnet and a back yoke arranged on or above the magnet, and an elastic member. The elastic member includes a vibrator attachment part attached to the vibrator, a housing attachment part attached to the housing, and an arm part coupling the vibrator attachment part and the housing attachment part, said arm part displaceably supporting the vibrator attachment part at least in a horizontal direction with respect to the housing attachment part. The back yoke includes a planar part arranged on or above the magnet and a holding part bending the planar part toward the frame from the planar part. The vibrator attachment part is held and embraced by the holding part.Type: GrantFiled: October 4, 2016Date of Patent: October 1, 2019Assignee: MINEBEA CO., LTD.Inventors: Mikio Umehara, Yutaka Kamogi
-
Patent number: 10350637Abstract: A vibrator-mounted holder is attached to a casing of a vibration generator which moves a vibrator to generate a vibration when used. The vibrator-mounted holder includes a vibrator, a vibrator retention unit retaining the vibrator, a fixing unit fixed to a casing, and an arm. The vibrator includes a magnet having a plate shape parallel to a horizontal surface and a yoke arranged on the magnet. The arm connects the fixing unit to the vibrator retention unit, and supports the vibrator retention unit in a manner that the vibrator retention unit is displaceable with respect to the fixing unit. The yoke has a projecting portion which is projected downward and fixed to the vibrator retention unit. The arm is connected to a portion, at which the projecting portion is arranged, within the vibrator retention units.Type: GrantFiled: March 6, 2017Date of Patent: July 16, 2019Assignee: MINEBEA CO., LTD.Inventor: Mikio Umehara
-
Patent number: 9989437Abstract: A vibrator-mounted holder is attached to a casing of a vibration generator which moves a vibrator to generate a vibration when used. The vibrator-mounted holder includes a vibrator, a vibrator retention unit retaining the vibrator, a fixing unit fixed to a casing, and an arm. The vibrator includes a magnet having a plate shape parallel to a horizontal surface and a yoke arranged on the magnet. The arm connects the fixing unit to the vibrator retention unit, and supports the vibrator retention unit in a manner that the vibrator retention unit is displaceable with respect to the fixing unit. The yoke has a projecting portion which is projected downward and fixed to the vibrator retention unit. The arm is connected to a portion, at which the projecting portion is arranged, within the vibrator retention units.Type: GrantFiled: December 11, 2013Date of Patent: June 5, 2018Assignee: MINEBEA CO., LTD.Inventor: Mikio Umehara
-
Publication number: 20180152090Abstract: In accordance with one aspect of the present disclosure, an electronic device includes a housing, a contact member attached to the housing, and a vibration generating device. The vibration generating device is fixed to the contact member or the housing. A gap is formed between a surface of the vibration generating device facing the housing and a surface of the housing facing the vibration generating device.Type: ApplicationFiled: November 27, 2017Publication date: May 31, 2018Inventors: Mikio UMEHARA, Yutaka KAMOGI
-
Publication number: 20180152089Abstract: In accordance with one aspect of the present disclosure, a vibration generating device includes a protruding part; a base provided with the protruding part and formed of a magnetic body; an annular coil surrounding the protruding part; a plate facing the base and formed of a magnetic body; and an elastic member supporting the plate with respect to the base. The plate and the base constitute magnetic circuit.Type: ApplicationFiled: November 27, 2017Publication date: May 31, 2018Inventors: Mikio UMEHARA, Yutaka KAMOGI
-
Publication number: 20170173633Abstract: A vibrator-mounted holder is attached to a casing of a vibration generator which moves a vibrator to generate a vibration when used. The vibrator-mounted holder includes a vibrator, a vibrator retention unit retaining the vibrator, a fixing unit fixed to a casing, and an arm. The vibrator includes a magnet having a plate shape parallel to a horizontal surface and a yoke arranged on the magnet. The arm connects the fixing unit to the vibrator retention unit, and supports the vibrator retention unit in a manner that the vibrator retention unit is displaceable with respect to the fixing unit. The yoke has a projecting portion which is projected downward and fixed to the vibrator retention unit. The arm is connected to a portion, at which the projecting portion is arranged, within the vibrator retention units.Type: ApplicationFiled: March 6, 2017Publication date: June 22, 2017Inventor: Mikio UMEHARA
-
Publication number: 20170104401Abstract: A vibrator unit capable of being attached to a housing of a vibration generator includes a vibrator including a magnet and a back yoke arranged on or above the magnet, and an elastic member. The elastic member includes a vibrator attachment part attached to the vibrator, a housing attachment part attached to the housing, and an arm part coupling the vibrator attachment part and the housing attachment part, said arm part displaceably supporting the vibrator attachment part at least in a horizontal direction with respect to the housing attachment part. The back yoke includes a planar part arranged on or above the magnet and a holding part bending the planar part toward the frame from the planar part. The vibrator attachment part is held and embraced by the holding part.Type: ApplicationFiled: October 4, 2016Publication date: April 13, 2017Applicant: MINEBEA CO., LTD.Inventors: Mikio UMEHARA, Yutaka KAMOGI
-
Patent number: 9525379Abstract: A control method for a vibration generator is provided. The vibration generator includes a fixed part around which a coil is wound, a movable part having a magnet, a bridge part movably supporting the movable part, and a power supply unit which applies an alternating current of a predetermined frequency to the coil. The power supply unit starts at the time of startup by the alternating current with a starting frequency which differs from a resonance frequency of the movable part, and the power supply unit changes the frequency of the applied alternating current to the resonance frequency of the movable part when the amount of vibration at the starting frequency reaches a predetermined ratio with respect to a saturation vibration amount of the resonance frequency.Type: GrantFiled: June 4, 2015Date of Patent: December 20, 2016Assignee: Minebea Co., Ltd.Inventors: Mikio Umehara, Yutaka Kamogi
-
Publication number: 20150357958Abstract: A control method for a vibration generator is provided. The vibration generator includes a fixed part around which a coil is wound, a movable part having a magnet, a bridge part movably supporting the movable part, and a power supply unit which applies an alternating current of a predetermined frequency to the coil. The power supply unit starts at the time of startup by the alternating current with a starting frequency which differs from a resonance frequency of the movable part, and the power supply unit changes the frequency of the applied alternating current to the resonance frequency of the movable part when the amount of vibration at the starting frequency reaches a predetermined ratio with respect to a saturation vibration amount of the resonance frequency.Type: ApplicationFiled: June 4, 2015Publication date: December 10, 2015Inventors: Mikio Umehara, Yutaka Kamogi
-
Publication number: 20140202252Abstract: A vibrator-mounted holder is attached to a casing of a vibration generator which moves a vibrator to generate a vibration when used. The vibrator-mounted holder includes a vibrator, a vibrator retention unit retaining the vibrator, a fixing unit fixed to a casing, and an arm. The vibrator includes a magnet having a plate shape parallel to a horizontal surface and a yoke arranged on the magnet. The arm connects the fixing unit to the vibrator retention unit, and supports the vibrator retention unit in a manner that the vibrator retention unit is displaceable with respect to the fixing unit. The yoke has a projecting portion which is projected downward and fixed to the vibrator retention unit. The arm is connected to a portion, at which the projecting portion is arranged, within the vibrator retention units.Type: ApplicationFiled: December 11, 2013Publication date: July 24, 2014Applicant: Minebea Co., Ltd.Inventor: Mikio UMEHARA
-
Patent number: 8222783Abstract: There is provided a holding structure to hold a vibration motor on a circuit board with a sufficient holding strength using an inexpensive and simple means such as caulking and bonding and a vibration motor held on a circuit board using the holding structure. The holding structure having a holder clamps a vibration motor body having an eccentric weight at an end of the rotation shaft around the outer periphery from the outside and supports the vibration motor at the lower part.Type: GrantFiled: August 3, 2011Date of Patent: July 17, 2012Assignee: Minebea Motor Manufacturing CorporationInventors: Mikio Umehara, Kazuaki Sato, Daichi Kadowaki
-
Patent number: 8137778Abstract: A weight for a vibration motor, the weight including: a resin part including: a semi-cylindrical portion having a shaft hole in which a rotary shaft is fitted and expanding radially from the shaft hole at a given center angle so as to be eccentrically weighted with respect to the shaft hole; and a pair of locking projections respectively disposed at both axial end areas of an outer circumferential surface of the semi-cylindrical portion so as to extend radially outwardly therefrom; and a metal part attached to the resin part so as to sit on the outer circumferential surface of the semi-cylindrical portion, the metal part including: a pair of locking recesses positioned and configured to correspond respectively to the locking projections of the resin portion, wherein an elevated portion formed between the pair of locking recesses makes contact with the pair of locking projections of the resin portion.Type: GrantFiled: April 22, 2009Date of Patent: March 20, 2012Assignee: Minebea Motor Manufacturing CorportionInventors: Masatoshi Kawano, Mikio Umehara, Daichi Kadowaki
-
Publication number: 20110285228Abstract: There is provided a holding structure to hold a vibration motor on a circuit board with a sufficient holding strength using an inexpensive and simple means such as caulking and bonding and a vibration motor held on a circuit board using the holding structure. The holding structure having a holder clamps a vibration motor body having an eccentric weight at an end of the rotation shaft around the outer periphery from the outside and supports the vibration motor at the lower part.Type: ApplicationFiled: August 3, 2011Publication date: November 24, 2011Applicant: Minebea Motor Manufacturing CorporationInventors: Mikio UMEHARA, Kazuaki SATO, Daichi KADOWAKI
-
Patent number: 8013486Abstract: There is provided a holding structure to hold a vibration motor on a circuit board with a sufficient holding strength using an inexpensive and simple means such as caulking and bonding and a vibration motor held on a circuit board using the holding structure. The holding structure having a holder clamps a vibration motor body having an eccentric weight at an end of the rotation shaft around the outer periphery from the outside and supports the vibration motor at the lower part.Type: GrantFiled: May 6, 2008Date of Patent: September 6, 2011Assignee: Minebea Motor Manufacturing CorporationInventors: Mikio Umehara, Kazuaki Sato, Daichi Kadowaki