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公开(公告)号：US20190186385A1
公开(公告)日：2019-06-20
申请号：US16323013
申请日：2017-07-28
Applicant: DENSO CORPORATION
Inventor： Osamu SHIMANE , Tohru SHIMIZU , Yuta FUJINAKA
Abstract: An angle detection mechanism to detect a rotation angle of a rotation body includes a first detection unit to cause a first output value to constantly change in response to an angle change of the rotation body in the entire region of a specific rotation range and to set a change quantity of the first output value relative to the angle change in a first rotation region of the specific rotation range to be greater than a change quantity in a non-first rotation region, and a second detection unit to cause a second output value to constantly change in response to an angle change and to set a change quantity of the second output value in a second rotation region including a rotation region different from the first rotation region to be greater than a change quantity in a non-second rotation region.
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公开(公告)号：US20130132018A1
公开(公告)日：2013-05-23
申请号：US13683364
申请日：2012-11-21
Applicant: DENSO CORPORATION
Inventor： Takamitsu KUBOTA , Tohru SHIMIZU , Tetsuya HARA , Yoshiyuki KONO
IPC: G06F17/40
CPC classification number: G06F17/40 , B60K26/04 , B60K2026/046 , B60W50/023 , B60W2510/0604 , B60W2540/10 , G01D5/145 , G01D5/24447 , G01D5/24476
Abstract: In a position detector for detecting a position of a detection body, a signal processing circuit processes a signal outputted from a magnetic field detection element. A first storage circuit stores the signal outputted from the magnetic field detection element and outputs a signal to an external device through an output circuit in a normal operation mode. A second storage circuit stores an output value of the first storage circuit. When a malfunction determination circuit determines an instantaneous power interruption mode, a signal route changing circuit prevents a signal transmission between the first storage circuit and the second storage circuit and a signal transmission between the first storage circuit and the output circuit, prevents the second storage circuit from updating data for a certain period of time, and permits the second storage circuit in which updating is prevented to output a signal to the output circuit.
Abstract translation: 在用于检测检测体的位置的位置检测器中，信号处理电路处理从磁场检测元件输出的信号。 第一存储电路存储从磁场检测元件输出的信号，并通过输出电路在正常运行模式下将信号输出到外部装置。 第二存储电路存储第一存储电路的输出值。 当故障确定电路确定瞬时功率中断模式时，信号路由改变电路防止第一存储电路和第二存储电路之间的信号传输以及第一存储电路和输出电路之间的信号传输，防止第二存储电路 从更新数据一段时间，并允许防止更新的第二存储电路向输出电路输出信号。
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公开(公告)号：US20210062931A1
公开(公告)日：2021-03-04
申请号：US16992173
申请日：2020-08-13
Applicant: DENSO DAISHIN CORPORATION , DENSO CORPORATION
Inventor： Makoto UNO , Yasushi KAWANO , Kenichi ISHIHARA , Tohru SHIMIZU , Yuta FUJINAKA
Abstract: A throttle valve device includes a body, a valve, a motor, and a cover. The body defines a passage, a motor space, and a connecting portion that connects the motor space to the passage. The motor includes a motor yoke made of a magnetic material, a plurality of magnets that are arranged on an inner circumferential surface of the motor yoke. The plurality of magnets are magnetized in a state where the motor yoke is disposed in the motor space of the body. The plurality of magnets are arranged in a circumferential direction in the motor yoke with a space. The connecting portion is aligned with the space between the plurality of magnets in a radial direction of the motor yoke.
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公开(公告)号：US20210054791A1
公开(公告)日：2021-02-25
申请号：US16992189
申请日：2020-08-13
Applicant: DENSO DAISHIN CORPORATION , DENSO CORPORATION
Inventor： Kenichi ISHIHARA , Tohru SHIMIZU
Abstract: A throttle valve device includes a body, a shaft, a pair of bearings, a valve, a motor, a valve gear, a coil spring, a first guide, and a second guide. At least one of the first guide and the second guide includes a circular holder that faces an end surface of the coil spring, a spring-end holding portion that outwardly protrudes from the circular holder and is configured to hold a spring end of the coil spring, a hub that is rotatably connected to the shaft, and a connecting portion that connects the hub and the circular holder. The first guide is in contact with a lever only at an end surface of the hub. The second guide is in contact with one of the pair of bearings, which is located close to the valve gear, at an end surface of the hub.
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公开(公告)号：US20210062734A1
公开(公告)日：2021-03-04
申请号：US16992184
申请日：2020-08-13
Applicant: DENSO DAISHIN CORPORATION , DENSO CORPORATION
Inventor： Yuta FUJINAKA , Kenichi ISHIHARA , Tohru SHIMIZU
IPC: F02D9/10
Abstract: A throttle valve device includes a body, a valve, a valve gear, a motor, an intermediate gear, an intermediate shaft and a cover. A guiding hole is formed in the cover and the intermediate shaft engages the guiding hole. A positioning reference pin is formed in one of the cover and the body at a position around the motor. A positioning reference hole is formed in the other of the cover and the body at a position around the motor. The body and the cover are positioned with respect to each other by both engaging between the intermediate shaft and the guiding hole and engaging between the positioning reference pin and the positioning reference hole. The body and the cover are fixed to each other by a fixing member.
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Patent Agency Ranking
公开(公告)号：US20170342914A1
公开(公告)日：2017-11-30
申请号：US15524728
申请日：2015-12-15
Applicant: DENSO CORPORATION
Inventor： Ryo NOUMURA , Yasushi KAWANO , Tohru SHIMIZU
CPC classification number: F02D9/10 , F02D9/106 , F02D11/10 , F16C19/06 , F16C19/10 , F16C19/52 , F16C21/00 , F16C33/783 , F16C33/7889 , F16C2361/91 , F16K1/22 , F16K1/224 , F16K1/2268 , F16K1/32
Abstract: A surface of a bearing member on a flow passage forming chamber-side is disposed to be exposed to the chamber. The bearing member includes a contact part, with which a side surface of a butterfly valve that is opposed to the bearing member is in contact, on at least a part of the surface of the bearing member on the chamber-side. The bearing member is a radial ball bearing and includes an outer bearing ring that is fitted to an inner periphery of a shaft hole, so that its axial displacement relative to a body is restricted, an inner bearing ring that is fitted on an outer periphery of a rotation shaft radially inward of the outer bearing ring, and a rolling element disposed between the outer bearing ring and the inner bearing ring. The contact part is provided on a surface of the inner bearing ring on the chamber-side.
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公开(公告)号：US20230417195A1
公开(公告)日：2023-12-28
申请号：US18337494
申请日：2023-06-20
Applicant: DENSO DAISHIN CORPORATION , DENSO CORPORATION
Inventor： Takumi NAGAYA , Tohru SHIMIZU
CPC classification number: F02D9/1065 , F16K31/042
Abstract: A throttle valve control device includes a valve arranged in a passage of a body and rotating together with a shaft to open and close the passage. A motor rotates the shaft such that the shaft is located at a valve fully-closed position, a valve fully-open position, or a valve intermediate position which is between the valve fully-closed position and the valve fully-open position. A coil spring applies a spring force to the shaft. A rotation angle sensor detects an opening degree of the valve. A controller executes a valve intermediate-position control within a range between a fully-open side threshold and a fully-closed side threshold between which the valve intermediate position is interposed. Outside the range, the controller executes a fully-open side control and a fully-closed side control which are different from the valve intermediate-position control.
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公开(公告)号：US20230400103A1
公开(公告)日：2023-12-14
申请号：US18191038
申请日：2023-03-28
Applicant: DENSO DAISHIN CORPORATION , DENSO CORPORATION
Inventor： Keina HITSUYU , Tohru SHIMIZU
CPC classification number: F16K1/221 , F16K31/047 , F16K27/0218
Abstract: A coil spring of a throttle valve device around a shaft between a valve and a valve gear has one end rotated together with a first guide, and another end rotated together with a second guide. The both ends of the coil spring contact a holding portion and a driving portion at a valve intermediate position of the shaft. The driving portion pushes the one end of the coil spring while the holding portion holds the other end of the coil spring during movement of the shaft from the valve intermediate position toward a valve fully-open position or a valve fully-closed position. The first guide and the second guide have insertion holes that face each other in an axial direction when the both ends of the coil spring are positioned near the valve intermediate position of the shaft and are not in contact with the holding portion.
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公开(公告)号：US20180238409A1
公开(公告)日：2018-08-23
申请号：US15752319
申请日：2016-09-19
Applicant: DENSO CORPORATION
Inventor： Akira HIGUCHI , Tohru SHIMIZU , Tadashi KOMIYAMA
CPC classification number: F16F1/025 , F02D9/1065 , F02D2009/0264 , F02D2009/0269 , F16F1/06 , F16F1/48 , F16F2234/00 , F16F2236/08 , F16F2238/024 , F16F2238/028
Abstract: A torsion spring that is used in a throttle valve device increasing and decreasing an opening degree of an intake passage or an exhaust passage of an internal-combustion engine includes: two coil springs connected with each other so that torsion directions are opposite from each other; and a hook disposed between the two coil springs. Of the two coil springs, one side spring arranged at one side in an axial direction biases a valve object to a closing side, and the other side spring arranged at the other side in the axial direction biases the valve object to an opening side. In at least one coil spring of the two coil springs, a dimension of a clearance between the at least one coil spring and the hook connected with each other is larger than an average value of clearances between coil turns of the at least one coil spring.
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公开(公告)号：US20210062733A1
公开(公告)日：2021-03-04
申请号：US16992182
申请日：2020-08-13
Applicant: DENSO DAISHIN CORPORATION , DENSO CORPORATION
Inventor： Koshiro MIWA , Yasushi KAWANO , Kenichi ISHIHARA , Tohru SHIMIZU , Yuta FUJINAKA
Abstract: A throttle valve device includes a body, a valve, a motor, a speed reducer, and a cover. The body that defines a passage and a motor space therein. The motor includes a motor yoke, a magnet, a motor shaft, a pair of motor bearings, an armature core, a commutator, a brush, and a brush holder. The motor yoke is made of a magnetic material. The brush holder holds the brush. The motor yoke has an open end that is covered by the brush holder.
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