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公开(公告)号：US10989124B2
公开(公告)日：2021-04-27
申请号：US16736182
申请日：2020-01-07
Applicant: DENSO CORPORATION
Inventor： Masashi Yamaguchi , Etsugo Yanagida , Naoaki Kono , Tetsuji Yamanaka , Atsushi Tanaka , Kunio Namba
Abstract: An actuator is configured to drive a boost pressure control valve of a supercharger. The actuator includes: an electric motor; an output shaft; and a speed reducer that is configured to transmit rotation, which is outputted from the electric motor, to the output shaft after reducing a speed of the rotation outputted from the electric motor. The speed reducer has a plurality of gears that include an output gear joined to the output shaft. The plurality of gears further includes a metal gear and a resin gear of a compound gear, which are respectively formed as a large diameter gear and a small diameter gear and are integrated together in one piece. The output gear is a resin gear.
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Patent Agency Ranking
公开(公告)号：US11378175B2
公开(公告)日：2022-07-05
申请号：US16736210
申请日：2020-01-07
Applicant: DENSO CORPORATION
Inventor： Masashi Yamaguchi , Etsugo Yanagida , Tetsuji Yamanaka , Atsushi Tanaka , Naoaki Kono , Kunio Namba
Abstract: An actuator includes an electric motor, an output shaft and a speed reducer. The speed reducer is configured to transmit rotation, which is outputted from the motor, to the output shaft after reducing a speed of the rotation outputted from the motor. The speed reducer includes an output gear joined to the output shaft and a compound gear. The compound gear includes a large diameter gear, which has a plurality of large gear teeth, and a small diameter gear, which has a plurality of small gear teeth. One of the large diameter gear and the small diameter gear is a metal gear, which is made of a metal member, while another one of the large diameter gear and the small diameter gear is a resin gear, which is made of a resin member, and the resin gear is integrally molded together with the metal gear in one piece.
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公开(公告)号：US11028789B2
公开(公告)日：2021-06-08
申请号：US16736247
申请日：2020-01-07
Applicant: DENSO CORPORATION
Inventor： Daisuke Hokuto , Tetsuji Yamanaka , Kunio Namba , Atsushi Tanaka , Etsugo Yanagida , Naoaki Kono , Masashi Yamaguchi
Abstract: An output gear includes a fixing portion, which is joined to a surface-processed portion of an output shaft, and a connecting portion that connects between a toothed portion of the output gear and the fixing portion. A length, which is measured from a center of a boundary surface between the connecting portion and the fixing portion in an axial direction of an axis of the output shaft to one end part of a joint between the surface-processed portion and the fixing portion on a linkage mechanism side along the joint, is indicated by L1. A length, which is measured from the center of the boundary surface to an opposite end part of the joint that is opposite to the linkage mechanism in the axial direction, is indicated by L2. A relationship of L1>L2 is satisfied.
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公开(公告)号：US10457267B2
公开(公告)日：2019-10-29
申请号：US15838737
申请日：2017-12-12
Applicant: DENSO CORPORATION
Inventor： Hirofumi Onodera , Kunio Namba , Yasuo Kato
Abstract: A controller controls a valve device for opening and closing of a passage to control a flow of evaporative fuel evaporating and flowing from a fuel tank. The valve device includes a valve body housed in the passage to open and close the passage, a biasing member biasing the valve body to close the passage, and a driver driving the valve body to open the fuel passage. The controller includes a detector detecting load of the driver and a determiner to determine the position of the valve body. The determiner determines that the passage is open when a magnitude of the change of the driver load is equal to or greater than a threshold value. The controller accurately detects an open valve position without detecting an internal pressure change of the fuel tank.
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公开(公告)号：US11319869B2
公开(公告)日：2022-05-03
申请号：US16840798
申请日：2020-04-06
Applicant: DENSO CORPORATION
Inventor： Tetsuji Yamanaka , Kunio Namba , Naoaki Kono , Atsushi Tanaka
Abstract: An actuator is configured to drive a boost pressure control valve of a supercharger and includes an electric motor, an output shaft, a speed reducer, a rotational angle sensor and a magnetic circuit holder member. The speed reducer includes a final gear. The final gear is made of metal and is fixed to the output shaft, and the speed reducer reduces a speed of rotation outputted from the electric motor and transmits the rotation of the reduced speed to the output shaft. The rotational angle sensor includes a magnetic circuit device and a sensing device and senses a rotational angle of the output shaft. The magnetic circuit holder member is a non-magnetic member fixed to the output shaft. The magnetic circuit holder member is formed separately from the final gear and holds the magnetic circuit device.
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公开(公告)号：US10851720B2
公开(公告)日：2020-12-01
申请号：US16736110
申请日：2020-01-07
Applicant: DENSO CORPORATION
Inventor： Naoaki Kono , Etsugo Yanagida , Masashi Yamaguchi , Tetsuji Yamanaka , Atsushi Tanaka , Kunio Namba
Abstract: An actuator is provided for driving a turbocharging pressure control valve of a turbocharger. The actuator comprises a motor, an output shaft and a speed reduction mechanism for transmitting rotation of the motor to the output shaft by reducing a rotation speed. The speed reduction mechanism includes at least one gear having a shaft hole, a support shaft inserted into the shaft hole and holding the gear rotatably, and wall portions provided at both ends of the support shaft in a manner sandwiching the gear. The speed reduction mechanism further includes a wear powder holding portion provided radially outside an outer periphery of the support shaft and in at least one of two end portions of the shaft hole and the wall portions in a manner to hold wear powder or foreign substance without scattering.
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