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公开(公告)号：US20230005692A1
公开(公告)日：2023-01-05
申请号：US17940056
申请日：2022-09-08
Applicant: DENSO CORPORATION , DENSO ELECTRONICS CORPORATION
Inventor： Masahiro TANIMOTO , Mitsugu FUJIWARA , Hiroshi NAGURA , Makoto KAMIYA
Abstract: In an electromagnetic relay device, a mover includes a movable contact movable to abut onto and separate from a stationary contact through a contact region defined between the movable and the stationary contacts. A plunger causes the mover to reciprocate to accordingly cause the movable contact to abut onto or separate from the stationary contact. A solenoid unit of the electromagnetic relay device includes an electromagnetic coil, a movable core, and a support member that slidably supports an outer peripheral surface of a slidable contact portion of the movable core. A movable wall member is located between the slidable contact portion and the contact region. The movable wall member reciprocates together with the plunger. The movable wall member is arranged to occupy a region in the electromagnetic relay device. The region contains at least the slidable contact portion when viewed in the reciprocation direction.
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公开(公告)号：US20230005687A1
公开(公告)日：2023-01-05
申请号：US17943360
申请日：2022-09-13
Applicant: DENSO ELECTRONICS CORPORATION
Inventor： Taisuke KATAKAMI , Naoki UEJIMA
Abstract: A press-fit fixing portion fixes a drive unit and a relay unit by press-fitting a claw portion and the recess portion. A sealing member is provided on an outside of the relay unit and the drive unit. An inner cover forms a sealed space for sealing an arc-extinguishing gas together with the sealing member. An electromagnetic relay is configured to make it possible both an adjustment of a press-fitting amount of the claw portion and the recess portion and an adjustment of the gap between a ceramic insulator at an end of a shaft and a movable element by making each of the relay unit and the drive unit in a manufacturing process to the same state as in when a magnetizing coil is energized.
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公开(公告)号：US20220094157A1
公开(公告)日：2022-03-24
申请号：US17472757
申请日：2021-09-13
Applicant: DENSO ELECTRONICS CORPORATION
Inventor： Yukiko MATSUBARA , Kazunori OZAWA
Abstract: A load control device includes a power supply terminal connected to a power source via a fuse, a load driver configured to drive loads by electric power supplied from the power source via the fuse and the power supply terminal, a current detector configured to detect load currents that flow through the loads, respectively, and a controller. The controller is configured to calculate a total current that flows through the fuse based on the load currents detected by the current detector, calculate a physical quantity correling with the total current and related to a connecting member that connects between the fuse and the power supply terminal in response to that the total current is equal to or higher than a predetermined current value, and limit at least one of the load currents in response to that the physical quantity is equal to or greater than a reference value.
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公开(公告)号：US11051110B2
公开(公告)日：2021-06-29
申请号：US16448008
申请日：2019-06-21
Applicant: DENSO ELECTRONICS CORPORATION
Inventor： Susumu Miyata , Koshiro Hayakawa
Abstract: A sound generator that generates sound by vibrating a diaphragm includes: a housing including a first space opened to the atmosphere by a sound emission hole and a second space separated from the first space by the diaphragm; and a shield plate disposed in the first space to face the diaphragm while being separated from the diaphragm. When the diaphragm is displaced toward the first space by a pressure difference between the first space and the second space, the diaphragm comes in contact with the shield plate to limit deformation of the diaphragm.
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公开(公告)号：US11031203B2
公开(公告)日：2021-06-08
申请号：US16468407
申请日：2017-11-02
Inventor： Masanao Sugisawa , Makoto Motono
IPC: H01H50/54
Abstract: A contact point device includes a first contactor, an oscillation supporting portion, and a second contactor. The first contactor has an outer side surface shaped in a column that surrounds a central axis. The oscillation supporting portion supports the first contactor to allow the central axis to oscillate. The second contactor is disposed opposite to the first contactor. One of the first contactor and the second contactor includes a plurality of first contact portions provided to surround the central axis on a plane perpendicular to the central axis, and the other includes a second contact portion provided to protrude toward a space surrounded by the plurality of the first contact portions. The second contact portion has a contact surface which is a curved surface exposed toward the space to surround the central axis.
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Patent Agency Ranking
公开(公告)号：US10971920B2
公开(公告)日：2021-04-06
申请号：US16106650
申请日：2018-08-21
Inventor： Tomokatsu Fuseya , Naoyuki Yasuda , Manabu Morita , Jiro Ito , Shinji Oshita
Abstract: An overcurrent protection device is to be provided between a power supply and a load circuit including an electric load and an electric wire electrically connected with each other, and includes a switching element, a current detector, a characteristic estimation portion, and a controller. The switching element switches flowing and interrupting of a load current that flows from the power supply to the electric load. The current detector detects the load current. The characteristic estimation portion estimates a thermal characteristic of the electric wire based on the load current detected by the current detector. The controller outputs an overcurrent protection signal for interrupting the load current so as to protect the load circuit from an overcurrent to the switching element based on the thermal characteristic estimated by the characteristic estimation portion and the load current detected by the current detector.
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公开(公告)号：US20250074361A1
公开(公告)日：2025-03-06
申请号：US18798895
申请日：2024-08-09
Applicant: DENSO ELECTRONICS CORPORATION
Inventor： Taiki SOMA , Yasuo NARUSE , Manabu MORITA , Tomokatsu FUSEYA , Mitsuyoshi TOMIDA
IPC: B60S1/08
Abstract: A wiper control device includes an acquisition unit and an estimation unit. The estimation unit is configured to acquire a value related to a current flowing through a wiper motor that drives a wiper configured to reciprocate between a first position and a second position. The estimation unit is configured to estimate a wiper angle, which is a rotation angle of the wiper, based on a current ripple in the current flowing through the wiper motor. The current ripple has a periodicity corresponding to driving of the wiper motor.
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公开(公告)号：US20240406615A1
公开(公告)日：2024-12-05
申请号：US18798994
申请日：2024-08-09
Applicant: DENSO ELECTRONICS CORPORATION
Inventor： Koshiro HAYAKAWA
Abstract: A sound generator includes a sound generating body that generates sound, and a housing that houses the sound generating body. The housing includes a base having a base outer cylindrical portion and a partition wall, which is joined with a sound generating body, provided inside the base outer cylindrical portion, a cover that covers an opening on a front side of the base outer cylindrical portion, and a case that covers an opening on a rear side of the base outer cylindrical portion. The case includes a case rear portion arranged to face the opening of the base outer cylindrical portion, and a case width adjustment portion provided in an extending manner from the case rear portion. The case is joined to the base outer cylindrical portion at an end of the case width adjustment portion.
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公开(公告)号：US20240300448A1
公开(公告)日：2024-09-12
申请号：US18594039
申请日：2024-03-04
Applicant: DENSO ELECTRONICS CORPORATION
Inventor： Tomokatsu FUSEYA
CPC classification number: B60S1/0807 , B60S1/16
Abstract: A wiper controller includes an acquirer and a determiner. The acquirer acquires a value related to an electric current flowing through a wiper motor driving a wiper reciprocating between a first position and a second position. The determiner determines that a position of the wiper is either the first position or the second position based on a temporal change of the electric current flowing through the wiper motor.
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公开(公告)号：US11778387B2
公开(公告)日：2023-10-03
申请号：US17404778
申请日：2021-08-17
Applicant: DENSO ELECTRONICS CORPORATION
Inventor： Susumu Miyata
CPC classification number: H04R9/06 , H04R1/021 , H04R1/023 , H04R1/026 , H04R7/127 , H04R9/046 , H04R31/003 , H04R2499/13
Abstract: A sound generator includes a sound generating body, a base, a protection wall, and an erected wall. The sound generating body includes a diaphragm and a driving portion. The base includes a base tubular portion and a partition wall defining a sound hole. The diaphragm and the partition wall divide an inner space of the base tubular portion into a first space and a second space. The protection wall is disposed away from the partition wall and the erected wall connects between the protection wall and the base tubular portion. The protection wall, the erected wall, and the partition wall defines a sound emission space in communication with the first space through the sound hole. The protection wall and the erected wall define an emission hole through which the sound exits.
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