Patents by Inventor Junji TSUKIDA
Junji TSUKIDA 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).
-
Patent number: 11005333Abstract: An electric motor includes a stator, a rotor having a tubular shape and disposed radially outside of the stator, and a fan mounting portion located on one side of the stator along an axial direction and mounted to the rotor. An end face of the fan mounting portion has a contact region that contacts a mounting surface of a fan, and a noncontact region that does not contact the fan.Type: GrantFiled: October 3, 2016Date of Patent: May 11, 2021Assignee: Daikin Industries, Ltd.Inventors: Yoshinori Takayama, Junji Tsukida
-
Patent number: 10396619Abstract: An electric motor includes a conductive shaft extending along an axis of rotation and passing through a back yoke to be fixed to one of a stator and a rotor. At least one bearing includes a conductive inner ring fixed to the shaft and a conductive outer ring rotatably coupled to the inner ring. A conductive bearing housing extends so as not to be located in a first area at one side with respect to the stator along an axial direction extending along the axis of rotation but to be located in a second area at the opposite side along the axis direction. The bearing housing is fixed to the outer ring of the bearing and to the other of the stator and the rotor. An electric motor is configured to be oppositely spaced from a plate electrically grounded in the axial direction.Type: GrantFiled: June 11, 2015Date of Patent: August 27, 2019Assignee: Daikin Industries, Ltd.Inventors: Yoshinori Takayama, Tatsuya Ogawa, Junji Tsukida
-
Patent number: 10298096Abstract: An electric motor includes a shaft extending along an axial direction, a stator, a rotor arranged farther away from the shaft than the stator in a radial direction of the shaft, a stator fixing part fixed to the shaft and fixed to the stator, and a rotor fixing part facing the stator fixing part and the stator with an air gap formed between in the axial direction. The rotor fixing part is rotatably coupled to the shaft and fixed to the rotor. A rotor hole is formed in the rotor fixing part. The rotor hole passes through the rotor fixing part to be communicated with the air gap. A stator hole is formed in the stator fixing part. The stator hole passes through the stator fixing part to be communicated with the rotor hole with the air gap formed between.Type: GrantFiled: June 12, 2015Date of Patent: May 21, 2019Assignee: Daikin Industries, Ltd.Inventors: Yoshinori Takayama, Junji Tsukida
-
Publication number: 20180241278Abstract: An electric motor includes a stator, a rotor having a tubular shape and disposed radially outside of the stator, and a fan mounting portion located on one side of the stator along an axial direction and mounted to the rotor. An end face of the fan mounting portion has a contact region that contacts a mounting surface of a fan, and a noncontact region that does not contact the fan.Type: ApplicationFiled: October 3, 2016Publication date: August 23, 2018Inventors: Yoshinori TAKAYAMA, Junji TSUKIDA
-
Publication number: 20170155305Abstract: An electric motor includes a shaft extending along an axial direction and having conductivity, a plurality of bearings, a bearing housing, a stator arranged so as not to be located between the shaft and the bearing housing, and a rotor arranged so as not to be located between the shaft and the bearing housing. The bearings are axially spaced, with each including a conductive inner ring fixed to and in contact with the shaft, and a conductive outer ring rotatable relative to the inner ring. The bearing housing has a tubular shape surrounding the shaft and contacting at least two outer rings of the bearings. The rotor faces the stator and is coupled to the stator with the shaft, the bearings, and the bearing housing between the stator and the rotor so as to rotate relative to the stator.Type: ApplicationFiled: June 11, 2015Publication date: June 1, 2017Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Yoshinori TAKAYAMA, Tatsuya OGAWA, Junji TSUKIDA
-
Publication number: 20170133911Abstract: An electric motor includes a shaft extending along an axial direction, a stator, a rotor arranged farther away from the shaft than the stator in a radial direction of the shaft, a stator fixing part fixed to the shaft and fixed to the stator, and a rotor fixing part facing the stator fixing part and the stator with an air gap formed between in the axial direction. The rotor fixing part is rotatably coupled to the shaft and fixed to the rotor. A rotor hole is formed in the rotor fixing part. The rotor hole passes through the rotor fixing part to be communicated with the air gap. A stator hole is formed in the stator fixing part. The stator hole passes through the stator fixing part to be communicated with the rotor hole with the air gap formed between.Type: ApplicationFiled: June 12, 2015Publication date: May 11, 2017Inventors: Yoshinori TAKAYAMA, Junji TSUKIDA
-
Publication number: 20170133904Abstract: An electric motor includes a conductive shaft extending along an axis of rotation and passing through a back yoke to be fixed to one of a stator and a rotor. At least one bearing includes a conductive inner ring fixed to the shaft and a conductive outer ring rotatably coupled to the inner ring. A conductive bearing housing extends so as not to be located in a first area at one side with respect to the stator along an axial direction extending along the axis of rotation but to be located in a second area at the opposite side along the axis direction. The bearing housing is fixed to the outer ring of the bearing and to the other of the stator and the rotor. An electric motor is configured to be oppositely spaced from a plate electrically grounded in the axial direction.Type: ApplicationFiled: June 11, 2015Publication date: May 11, 2017Inventors: Yoshinori TAKAYAMA, Tatsuya OGAWA, Junji TSUKIDA
-
Patent number: 9097262Abstract: A fan includes an impeller having a plurality of blades. Each of the plurality of blades has a trailing edge portion positioned rearmost in a rotation direction and a leading edge portion positioned foremost in the rotation direction. A curved line interconnects the trailing edge portion and the leading edge portion at the shortest distance on an imaginary cylindrical surface. Each of the blades includes a lower surface facing downward in the direction of the center axis and an upper surface facing upward in the direction of the center axis. In the fan, L1/L2 decreases from a radial inner side toward a radial outer side, where L1 denotes the longest distance on the imaginary cylindrical surface between the curved line and a camber line and L2 denotes a length of the curved line.Type: GrantFiled: July 31, 2012Date of Patent: August 4, 2015Assignee: Nidec CorporationInventor: Junji Tsukida
-
Publication number: 20130045092Abstract: A fan includes an impeller having a plurality of blades. Each of the plurality of blades has a trailing edge portion positioned rearmost in a rotation direction and a leading edge portion positioned foremost in the rotation direction. A curved line interconnects the trailing edge portion and the leading edge portion at the shortest distance on an imaginary cylindrical surface. Each of the blades includes a lower surface facing downward in the direction of the center axis and an upper surface facing upward in the direction of the center axis. In the fan, L1/L2 decreases from a radial inner side toward a radial outer side, where L1 denotes the longest distance on the imaginary cylindrical surface between the curved line and a camber line and L2 denotes a length of the curved line.Type: ApplicationFiled: July 31, 2012Publication date: February 21, 2013Applicant: NIDEC CORPORATIONInventor: Junji TSUKIDA