公开(公告)号：US20250074362A1

公开(公告)日：2025-03-06

申请号：US18798913

申请日：2024-08-09

Applicant: DENSO ELECTRONICS CORPORATION ,  DENSO CORPORATION

Inventor： Taiki SOMA ,  Yasuo NARUSE ,  Manabu MORITA ,  Tomokatsu FUSEYA ,  Mitsuyoshi TOMIDA

IPC: B60S1/08 ,  H02P23/14

Abstract: A wiper control device includes an acquisition unit, an estimation unit, and a drive unit. The acquisition 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. The drive unit is configured to reduce an electric power supplied to the wiper motor when a position of the wiper is just before the first position or when the position of the wiper is just before the second position.

公开(公告)号：US12191095B2

公开(公告)日：2025-01-07

申请号：US17940499

申请日：2022-09-08

Applicant: DENSO CORPORATION ,  DENSO ELECTRONICS CORPORATION

Inventor： Jun Komatsu ,  Hiroshi Nagura ,  Naoki Uejima

IPC: H01H50/18 ,  H01H50/36

Abstract: An electromagnetic relay device includes a mover, a plunger, and a solenoid unit that causes the plunger to reciprocate. The mover includes a movable contact movable to abut onto or separate from a stationary contact. The plunger causes the mover to reciprocate to accordingly cause the movable contact to abut onto or separate from the stationary contact. A heat-resistant member is interposed between the insulator and the mover. The plunger enables indirect abutment onto the mover through the insulator and the heat-resistant member. A heat-resistant temperature of the heat-resistant member is set to be higher than that of the insulator.

公开(公告)号：US12115945B2

公开(公告)日：2024-10-15

申请号：US18074581

申请日：2022-12-05

Applicant: DENSO ELECTRONICS CORPORATION

Inventor： Taiga Ishikawa

IPC: B60S1/08

CPC classification number: B60S1/0807

Abstract: A wiper drive device includes: a wiring connected to a wiper motor; a drive element configured to apply a voltage to the wiper motor through the wiring by being turned on so as to rotate the wiper motor; a braking element configured to brake the wiper motor by being turned on when the drive element is turned off so as to flow a current corresponding to a rotational energy of the wiper motor; and a determination unit configured to determine that the braking element is abnormal when a time period from when the wiper motor is braked to when an electric potential of the wiring becomes equal to or less than a predetermined threshold potential is longer than a predetermined value which is the time period in case where the braking element is normal.

公开(公告)号：US12009170B2

公开(公告)日：2024-06-11

申请号：US17943360

申请日：2022-09-13

Applicant: DENSO ELECTRONICS CORPORATION

Inventor： Taisuke Katakami ,  Naoki Uejima

IPC: H01H50/36 ,  H01H49/00 ,  H01H50/02 ,  H01H50/14 ,  H01H50/44

CPC classification number: H01H50/023 ,  H01H49/00 ,  H01H50/14 ,  H01H50/36 ,  H01H50/44

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.

公开(公告)号：US20230421938A1

公开(公告)日：2023-12-28

申请号：US18462836

申请日：2023-09-07

Applicant: DENSO ELECTRONICS CORPORATION ,  FOSTER ELECTRIC COMPANY, LIMITED

Inventor： Susumu MIYATA ,  Atsushi KOGA

IPC: H04R1/06 ,  H04R1/02 ,  H04R3/00

CPC classification number: H04R1/06 ,  H04R1/025 ,  H04R3/00 ,  H04R2400/11 ,  H04R2499/13

Abstract: An electrical device includes a housing, a drive unit arranged inside the housing a substrate arranged inside the housing, and a terminal electrically connecting the substrate with an external portion outside the housing. On the substrate, a circuit driving the drive unit is formed. The terminal includes a terminal protrusion exposed from an inner wall surface of the housing and protruding toward the substrate. The terminal is connected to the substrate at an end portion of the terminal protrusion. The substrate is fixed inside the housing by a first substrate attachment portion and a second substrate attachment portion arranged at a position farther from a connecting portion between the terminal and the substrate than the first substrate attachment portion. The second substrate attachment portion has higher flexibility than the first substrate attachment portion.

公开(公告)号：US20220303679A1

公开(公告)日：2022-09-22

申请号：US17835708

申请日：2022-06-08

Applicant: DENSO ELECTRONICS CORPORATION

Inventor： Chikara YAMAMOTO

IPC: H04R3/04 ,  H04R1/28 ,  B60Q5/00

Abstract: A sound output device includes a waveform output unit and a sounding body. The waveform output unit is configured to output a sound waveform that includes a second waveform generated by a frequency modulation to a first waveform having a desired center frequency. The sounding body is configured to generate a sound corresponding to the sound waveform output from the waveform output unit.

公开(公告)号：US11407313B2

公开(公告)日：2022-08-09

申请号：US17183400

申请日：2021-02-24

Applicant: DENSO ELECTRONICS CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yasuo Naruse ,  Manabu Morita ,  Jiro Ito ,  Yoshio Nishino

IPC: H01H9/30 ,  H02H7/22 ,  B60L3/04 ,  H01H47/02 ,  B60R16/023 ,  B60R16/03

Abstract: A power supply circuit for supplying power to an electric load of a vehicle includes a relay and a relay control circuit. The relay is configure to be turned on when enabling the supply of power to the electric load and configured to be turned off when interrupting the supply of power to the electric load. The relay control circuit is configured to turn on the relay when an ignition of the vehicle is on regardless of a state of an operation part that is to be operated by a driver to operate the electric load.

公开(公告)号：US11335490B2

公开(公告)日：2022-05-17

申请号：US16871332

申请日：2020-05-11

Applicant: SOKEN, INC. ,  DENSO CORPORATION ,  DENSO ELECTRONICS CORPORATION

Inventor： Yoshitaka Nishiguchi ,  Takahiro Soki ,  Masanao Sugisawa

IPC: H01F3/00 ,  H01F7/16 ,  H01F7/08 ,  H01F27/24 ,  H01F27/28

Abstract: An electromagnetic coil through which current is passed to generate a magnetic flux, a fixed core, a movable core, a magnetic spring disposed between the cores and, and a yoke are provided. The magnetic spring includes a magnetic substance, and biases the movable core in a direction in which the movable core is separated from the fixed core in a Z direction. Additionally, the magnetic spring includes a leaf spring member including the magnetic substance and spirally wound, and a central portion of the magnetic spring is located biased toward one side in the Z direction compared to a peripheral portion of the magnetic spring. When the movable core is attracted to the access position, the magnetic spring is prevented from being deformed to a minimum spring length corresponding to a width of the leaf spring member.

公开(公告)号：US20210377669A1

公开(公告)日：2021-12-02

申请号：US17404778

申请日：2021-08-17

Applicant: DENSO ELECTRONICS CORPORATION

Inventor： Susumu MIYATA

IPC: H04R9/06 ,  H04R9/04 ,  H04R7/12

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.

公开(公告)号：US11158476B2

公开(公告)日：2021-10-26

申请号：US16360071

申请日：2019-03-21

Applicant: DENSO ELECTRONICS CORPORATION ,  DENSO CORPORATION

Inventor： Masanao Sugisawa ,  Yoshitaka Nishiguchi ,  Takahiro Soki

IPC: H01H50/54 ,  H01H1/20 ,  H01H51/29

Abstract: An electromagnetic relay includes: an exciting coil; a movable core driven by the exciting coil; a movable contactor having a first movable contact and a second movable contact to operate with the movable core; a first fixed terminal having a first fixed contact with which the first movable contact abuts when the movable contactor is moved by energizing the exciting coil; and a second fixed terminal having a second fixed contact with which the second movable contact abuts when the movable contactor is moved by energizing the exciting coil. An inclination angle of a central axis of the first movable contact with respect to a central axis of the first fixed contact and an inclination angle of a central axis of the second movable contact with respect to a central axis of the second fixed contact are inclined in opposite directions from each other.