Patents Assigned to Mazda Motor Corporation
  • Patent number: 11964634
    Abstract: A wiper control technique is provided that can prevent a windshield from being damaged by a falling wiper blade during a wiper parking operation, even when a wiper arm is in a retreat position where the blade is raised and held away from the windshield. In one embodiment, the wiper arm is stopped for a predetermined time interval at a predetermined pause position when the wiper arm is positioned above a parked position and at the retreat position during the wiper parking operation, while the wiper arm is being swung downward toward a lower reversal position. The pause position is a position at which the wiper arm is able to fall toward the windshield to return to a base position. After a lapse of the predetermined time interval, the wiper arm is swung to the parked position.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: April 23, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Keisuke Kondou, Ippei Yamauchi
  • Patent number: 11961307
    Abstract: An external environment recognition device includes: a plurality of external environment recognition sensors each having an information detection unit that detects information of an object outside a vehicle, the plurality of external environment recognition sensors being arranged such that a detection range of the information detection unit includes an overlapping region where at least part of the detection range of the information detection unit overlaps with at least part of the detection range of another one of the information detection units; and a synchronous processing unit that extracts identical objects in the overlapping region from detection results of the external environment recognition sensors, and performs synchronous processing to synchronize the plurality of external environment recognition sensors if there is a deviation in position between the identical objects in the overlapping region.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: April 16, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventor: Daisuke Hamano
  • Patent number: 11958467
    Abstract: A hybrid driving apparatus is provided which enables a driver to sufficiently enjoy a driving feeling of a vehicle driven by an internal combustion engine. A hybrid driving apparatus includes an internal combustion engine that drive main driving wheels, a motive power transmission mechanism transmitting a driving force to the main driving wheels, a main driving electric motor driving the main driving wheels, an accumulator, sub-driving electric motors transmitting motive power to sub-driving wheels of the vehicle, and a control apparatus executing an electric motor traveling mode and an internal combustion engine traveling mode. The control apparatus causes the internal combustion engine to generate the driving force, the internal combustion engine is a flywheel-less engine, and the control apparatus causes the main driving electric motor to generate a torque for maintaining idling of the internal combustion engine in the internal combustion engine traveling mode.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: April 16, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Isao Toda, Seiyo Hirano, Hideki Sanai
  • Patent number: 11953315
    Abstract: A vehicle wheel assembly position measurement apparatus measures, at each of at least three measurement positions in a circumferential direction, a distance in a vehicle width direction between each of plural measurement points located on a specified line that crosses a lateral surface of a tire section from an inner circumferential end to an outer circumferential end and a respective one of distance measuring instruments, calculates an approximate curve indicating a relationship between a position in an extending direction of the specified line and the distance of each of the measurement points at the respective measurement position, calculates a rotation center position of a wheel assembly from a specific position of the approximate curve at the measurement position, and calculates a height position of the wheel assembly relative to a vehicle body from the rotation center position and a height position of a specified portion of the vehicle body.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: April 9, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Taiga Inoue, Akira Fukunaga, Yoko Doi
  • Patent number: 11951829
    Abstract: A power transmission device is provided, which includes a main-drive-wheel drive part, and an auxiliary-drive-wheel drive part having a power extraction part which has a transfer gear set comprised of a transfer drive gear connected to the main-drive-wheel drive part and a transfer driven gear meshing with the transfer drive gear and configured to transmit power to the auxiliary drive wheels. In a power transmission path from the main-drive-wheel drive part to the transfer drive gear, an input shaft connected to the main-drive-wheel drive part and a power transmission shaft connected to the transfer drive gear are coupled to each other in a radial direction through a first spline having a first backlash. A first shear damper without backlash and a second shear damper provided with a second spline having a second backlash smaller than the first backlash are provided between the input shaft and the power transmission shaft.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: April 9, 2024
    Assignee: Mazda Motor Corporation
    Inventors: Seiji Hidaka, Atsushi Nakano
  • Patent number: 11952042
    Abstract: A lower vehicle-body structure of a vehicle may include: a floor panel; a side sill; and a frame member that extends in the front-rear direction on the vehicle-width-direction inner side of the side sill and includes a front-rear extended portion that is in abutment against the side sill on the vehicle-width-direction inner side and extends in the vehicle front-rear direction along the side sill. The front-rear extended portion may include: a bottom face portion; an inner wall portion; and an inner-side flange that extends to the vehicle-width-direction inner side from a distal end portion of the inner wall portion and is joined to the floor panel. Deformation facilitating facilitators that facilitate deformation of the bottom face portion in the vehicle width direction when a collision load in the vehicle width direction is input may be formed in the bottom face portion.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: April 9, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Mikado Kawasaki, Hirotaka Natsume, Keisuke Ebisumoto, Akiko Nakamoto, Daisuke Tsuji, Kento Otsuka
  • Patent number: 11951990
    Abstract: A gear shift control device of an automobile including a driving motor, a relay clutch capable of disconnecting an engine, includes memory storing a gear shift map for determining the switching start timing of the gear position, a transmission control unit that switches the gear position based on the gear shift map, a regeneration control unit, and a relay clutch control unit. The gear shift map includes a cooperative regeneration map and non-cooperative regeneration maps that define the thresholds of relatively low revolutions. The threshold of a predetermined low gear shift point is defined to be smaller than the thresholds of the gear shift points higher than the predetermined low gear shift point on the downshift side in the non-cooperative regeneration maps, and is defined to be smaller than the threshold of the predetermined low gear shift point on the downshift side in the cooperative regeneration map.
    Type: Grant
    Filed: March 27, 2023
    Date of Patent: April 9, 2024
    Assignee: Mazda Motor Corporation
    Inventors: Daigo Nishikori, Hiroaki Gotan, Akina Inagaki, Tomohiro Okubo, Kiminori Higo, Takayuki Mikami
  • Patent number: 11952000
    Abstract: The present disclosure includes device controllers that output control signals to in-vehicle devices based on a target motion set by a target motion setter based on input from the sensors, and a device failure diagnostic unit provided between the device controllers and the in-vehicle devices in a communication path of an arithmetic unit, in which the device failure diagnostic unit has a device diagnostic table in which the in-vehicle devices associated with each function are specified for each function of the vehicle, and diagnoses a failure of the in-vehicle devices based on output of the in-vehicle devices and the device diagnostic table.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: April 9, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yoshimasa Kurokawa, Tetsuhiro Yamashita
  • Patent number: 11951918
    Abstract: An in-vehicle power supply system includes: a main power supply configured to supply power; one or more power supply hubs; a plurality of electronic devices; a main power cable configured to connect the one or more power supply hubs to the main power supply; a sub power cable configured to connect each of the plurality of electronic devices to any one of the one or more power supply hubs; and a control unit configured to turn on/off power supply to each of the plurality of electronic devices through a power supply hub connected to the electronic device. For the plurality of electronic devices, a predetermined voltage is specified, and it is designed so that, while power is supplied to the plurality of electronic devices connected to the one or more power supply hubs, the predetermined voltage of at least one of the plurality of electronic devices is ensured.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: April 9, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Sadahisa Yamada, Kazuichi Fujisaka, Masaaki Shimizu
  • Patent number: 11951874
    Abstract: A vehicle driving system that can suppress a difference in effect of vehicle attitude control between the cases where a friction braking force is applied and not applied, is provided. The system includes a rotating electric machine, a battery, a steering apparatus, a steering angle sensor, a brake actuator that applies a friction braking force, a friction braking force sensor, and a controller that sets a deceleration torque based on a steering speed detected by the steering angle sensor and controls the rotating electric machine to apply the deceleration torque to a front wheel of the vehicle, thereby executing a vehicle attitude control. When the friction braking force is applied to the wheels by the brake actuator during the vehicle attitude control, if the friction braking force is large, the controller corrects the deceleration torque to a larger value than when the friction braking force is small.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: April 9, 2024
    Assignee: Mazda Motor Corporation
    Inventors: Daisaku Ogawa, Daisuke Umetsu, Shinya Morishita
  • Patent number: 11955826
    Abstract: Electronic devices include: a first electronic device capable of being always supplied with power; and a second electronic device capable of being supplied with the power through an operation by an occupant. Each of power supply hubs is located near the first electronic device, and connected to a battery or another one of the power supply hubs by one of main power supply lines. Each of the first and second electronic devices is connected to nearby one of the power supply hubs. Each of zone ECUs outputs a control signal to one of power supply ICs so as to distribute, to the first and second electronic devices, the power supplied to one of the power supply hubs by one of the main power supply lines.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: April 9, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Sadahisa Yamada, Yoshimasa Kurokawa, Tetsuhiro Yamashita, Masaaki Shimizu
  • Publication number: 20240109459
    Abstract: A seat cushion is formed integrally by a body pad portion, an outer peripheral edge portion, and a connection portion. The outer peripheral edge portion protrudes toward a floor panel from the outer peripheral edge portion in a plan view and contacts a floor panel at its lower face. The connection portion is provided to protrude toward the floor panel at a portion which is separated from a front-side part of the outer peripheral edge portion and a rear-side part of the outer peripheral edge portion, respectively. The connection portion connects the floor panel and the body pad portion. A portion between the front-side part and the rear-side part of the outer peripheral edge portion in a vehicle longitudinal direction is a separation portion where a lower face of the seat cushion faces an upper face of the floor panel with a gap.
    Type: Application
    Filed: February 23, 2023
    Publication date: April 4, 2024
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Kenji MATSUMOTO, Miho KURATA, Sakayu TERADA, Daisuke YAMADA, Yuki HANAZAWA, Naoko MOTOYOSHI, Aoi FUJIMOTO, Junsuke INOUE, Takashi SUZUKI
  • Publication number: 20240109598
    Abstract: A vehicle body structure includes a dashboard extending in a vehicle width direction and defining a cabin and a power compartment in front of the cabin; a power unit arranged in the power compartment; a floor panel extending rearward in the cabin from the dashboard; and a dash crossmember projected forward from the dashboard and extending in the vehicle width direction. The dash crossmember has a first portion at least partially overlapping the power unit in a front view; and a second portion extending outward in the vehicle width direction from the first portion. A compressive strength of the first portion is lower than a compressive strength of the second portion.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 4, 2024
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Kazuki YAMAUCHI, Ippei KURODA, Akiko KAWAMOTO
  • Patent number: 11945018
    Abstract: In drilling processing on a press-formed inclined portion, a hole is formed with high precision without occurrence of damage to a blade of a punch or slipping of the punch. Embodiments include a method where two through holes are formed in a blank before press-forming which are opposed to each other in the inclined direction of the inclined portion, each through portion partially forming a peripheral edge portion of the hole. The inclined portion is formed using press processing on the blank. Piercing processing using a punch is performed while pressing the inclined portion, so that the two opposed through holes are connected, thereby forming the hole.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: April 2, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventor: Shigeru Matsumoto
  • Patent number: 11945512
    Abstract: An electric vehicle includes a floor panel formed with a floor tunnel; a transmission; a transmission support member; an inverter attached to a case of the transmission; a battery unit disposed behind the transmission and on an outer side in a vehicle width direction of the floor tunnel; and a harness disposed such that an intermediate portion between a first end portion connected to the inverter and a second end portion connected to a front end portion of the battery unit 4 extends across the floor tunnel from inside to outside thereof. The battery unit has a substantially rectangular shape in a bottom view, and a corner on the floor tunnel side of a front end portion of the battery unit is cut out to form a free space between the front end portion of the battery unit and a portion of the floor tunnel behind the transmission support member.
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: April 2, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Kenji Katayama, Muneyuki Ohga, Ryuhei Sumita, Shuntaro Nakayama
  • Publication number: 20240106349
    Abstract: A switching module 120 includes a positive-side conductor 51 in contact with an input-side electrode 30a provided on each upper arm switching element 30U, a negative-side conductor 52 connected to an output-side electrode 30b of each lower arm switching element 30L, and an electric insulating member 140 in contact with, at its upper surface, each output conductor 53 in contact with the input-side electrode 30a of each lower arm switching element 30L and in contact with, at its lower surface, an electric conductive heat radiation member 42. Each positive-side electric conductive layer 61 connected to the positive-side conductor 51 faces a corresponding one of negative-side electric conductive layers 62 connected to the negative-side conductor 52 via the electric insulating layer 60 such that a storage structure 63 interposed between the positive-side main line 21 and the negative-side main line 22 to store charge is inside the electric insulating member 140.
    Type: Application
    Filed: March 23, 2023
    Publication date: March 28, 2024
    Applicant: Mazda Motor Corporation
    Inventor: Kouichi YAMANOUE
  • Publication number: 20240101122
    Abstract: A driver pre-abnormal detection apparatus includes: sensors to acquire travel environment information of a vehicle; an in-vehicle camera that detects the driver's sightline; and a controller configured to detect a driver's pre-abnormal state based on the travel environment information and the driver's sightline. The controller identifies a visual recognition required point to be visually recognized by the driver based on the travel environment information, determines whether the driver has visually recognized the visual recognition required point based on the driver's sightline, and detects the driver's pre-abnormal state based on a fact that the driver has not visually recognized the visual recognition required point.
    Type: Application
    Filed: March 27, 2023
    Publication date: March 28, 2024
    Applicant: Mazda Motor Corporation
    Inventors: Akiko FUKUI, Koji IWASE, Yohei IWASHITA
  • Publication number: 20240104945
    Abstract: A driver state determination apparatus includes: an in-vehicle camera detecting a driver's sightline and head behavior; and a controller configured to determine the driver's state based on the driver's sightline and head behavior. When the driver is in an abnormal state based on the driver's sightline movement, the controller determines whether or not the driver's abnormal state a visual field impairment based on a change in each of a yaw angle and a pitch angle of the driver's head. When the abnormal state is the visual field impairment, the controller determines that the driver is aware of the visual field impairment when there is a direction in which the driver's sightline is not directed in the driver's field of view, and unaware of the visual field impairment when there is no direction in which the driver's sightline is not directed in the driver's field of view.
    Type: Application
    Filed: March 27, 2023
    Publication date: March 28, 2024
    Applicant: Mazda Motor Corporation
    Inventors: Akiko FUKUI, Yohei IWASHITA, Koji IWASE, Satoru TAKENAKA, Daiki IZUMOTO
  • Publication number: 20240101124
    Abstract: A controller acquires a driving load score based on the travel environment information, acquires a distracted state occurrence score based on the driving load score and an elapsed time with the driving load score, acquires a search behavior score based on the travel environment information and the driver's sightline when the distracted state occurrence score is equal to or higher than a specified value, acquires a distracted state level of the driver based on the search behavior score and an elapsed time with the search behavior score, and determines that the driver is in the distracted state when the distracted state level is equal to or higher than a threshold and the search behavior score is increased in response to an increase in the driving load score.
    Type: Application
    Filed: March 24, 2023
    Publication date: March 28, 2024
    Applicant: Mazda Motor Corporation
    Inventors: Koji IWASE, Yohei IWASHITA
  • Patent number: 11939896
    Abstract: A blowby gas return apparatus is provided that achieves inhibition of condensation of water vapor in blowby gas in branched return passages. A blowby gas return apparatus that returns blowby gas generated in an engine having a plurality of cylinders to an intake system of the engine includes a distribution portion inside a head cover of the engine, and distributes the blowby gas to intake paths of the cylinders. The distribution portion includes an introduction portion through which the blowby gas is introduced and a plurality of branch passages communicating with the introduction portion, plurality of branch passages branching from the introduction portion to communicate with the intake paths.
    Type: Grant
    Filed: March 21, 2023
    Date of Patent: March 26, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Takashi Kashiwabara, Yuki Tsukagoshi