Abstract: A lower vehicle-body structure of a vehicle may include: a floor panel; a raised wall portion; a cross member that is disposed on an upper face of the floor panel and extends in the vehicle width direction; a frame member including: an inclined portion that is disposed so as to form a closed cross-section with the floor panel on a vehicle-width-direction outer side of the raised wall portion on the upper face of the floor panel and a connector connected to the cross member at a rear end of the inclined portion; and a coupler that is disposed on the floor panel at a place on a vehicle front side of the connection portion and couples the inclined portion and the raised wall portion to each other in the vehicle width direction.
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.
Abstract: An automatic transmission includes a clutch having a drum section, a hub, a friction plate, a piston that presses the friction plate, a hydraulic chamber to which hydraulic oil is supplied to urge the piston in a direction toward the friction plate, and a cancellation chamber to which hydraulic oil is supplied to cancel a centrifugal hydraulic pressure applied to the hydraulic oil in the hydraulic chamber, and the piston is interposed between the hydraulic chamber and the cancellation chamber. The drum section includes communication passages that extend in a radial direction and respectively communicate with the hydraulic chamber and the cancellation chamber. Of the communication passages, in the communication passage that communicates with the cancellation chamber, an adjustment member is provided at an end portion on a radially inner side, and can adjust an atmospheric air release position of the communication passage in the radial direction.
Abstract: Floor panel vibration is reduced by suppressing a mode in which an entire region surrounded by a plurality of frame members in a floor panel vibrates. Vehicle-body framework members having closed cross-section structures, and a panel member to which vibration is transmitted from an engine or/and a suspension via the vehicle-body framework members are provided. The panel member includes a flange portion having a planar shape on its outer peripheral edge and to which the vehicle-body framework members are joined along the panel outer peripheral edge; a curved surface portion that is curved such that a place closer to a panel central side bulges out more to a lower side in a continuous manner from a panel-central-side edge portion of the flange portion; and a flat surface portion that extends to the panel central side from the panel-central-side edge portion of the curved surface portion in a continuous manner.
Abstract: A vehicle front structure includes a dash upper panel and a grille top face portion having outside air introduction holes taking in outside air. The vehicle front structure includes a cover member covering an engine from a vehicle upper side and having a top plate rear portion opposed to the grille top face portion on a vehicle lower side throughout a predetermined range, including the outside air introduction holes, in a vehicle width direction, and a grille front face portion disposed from the grille top face portion to the top plate rear portion on a vehicle front side of the outside air introduction holes. The top plate rear portion has a shape having inclined surfaces extending from a vehicle lower side of the outside air introduction holes in the vehicle width direction, the inclined surfaces being gradually inclined to the vehicle lower side toward vehicle-width-direction outer sides.
Abstract: A network system includes a higher-level device, a first intermediate device connected to the higher-level device, and a second intermediate device connected to the higher-level device. The first intermediate device is configured to control supply of an electric power to a first lower-level device via a first device being able to be controlled to interrupt. The second intermediate device is configured to control supply of an electric power to a second lower-level device via a second device being able to be controlled to interrupt, the second lower-level device being a redundant component for the first lower-level device.
July 12, 2022
October 27, 2022
TOYOTA JIDOSHA KABUSHIKI KAISHA, MAZDA MOTOR CORPORATION
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.
Abstract: A trunk structure for a vehicle improves retainment performance of goods to a vehicle body in a cargo net, and improves flexibility of the layout of a trunk board. The trunk structure includes a trunk board, a hook member attached to the trunk board to which a cargo net covering goods can be locked, an interior member which constitutes an inside surface of a trunk, and an engaged portion of the interior member which the hook member can engage, the engaged portion restraining movement of the trunk board in an up-down direction when the engaged portion is engaged with the hook member. The hook member is switchable between an engaged state where the hook member engages the engaged portion and a non-engaged state where the engagement is released, and retains the engaged state by locking the cargo net to the hook member.
Abstract: A vehicle front body structure includes a front side frame extending forward from a dashboard separating a cabin and an engine compartment, an apron reinforcement extending in a front-rear direction, a suspension housing, a braking force booster between this suspension housing and the dashboard, and a coupling member coupled to the front side frame and the apron reinforcement. The coupling member is formed of a material with higher tensile strength than the suspension housing. The coupling member includes a body section fixed to a rear surface of the suspension housing, and a wall section. bent from a lower end of this body section and extending rearward.
Abstract: A vehicle front structure that absorbs a shock load applied to immediately under a front grille by using a structure at a position higher than a bumper beam as a support. The vehicle front structure includes a shock absorbing member at an interior of a bumper face below a front grille. The shock absorbing member includes a load receiving portion that receives a load, an abutting portion abutting against a structure above a bumper beam during receding of the shock absorbing member, an upper-side connecting portion connecting the load receiving portion and the abutting portion, a locking portion deformed while being locked to the bumper beam during receding of the shock absorbing member, and a lower-side connecting portion connecting the load receiving and locking portions. A bending facilitating portion extending in the vehicle width direction is formed on the side of a rear portion of the upper-side connecting portion.
October 5, 2020
Date of Patent:
October 25, 2022
MAZDA MOTOR CORPORATION
Makoto Aizawa, Tetsuo Nagata, Ryosuke Kawafune, Yuta Mishima
Abstract: There are provided a hinge pillar having a closed-cross section extending in a vehicle vertical direction, a side door body comprising a door outer and a door inner, a door trim provided to cover the door inner from a cabin inside, and a stay damper arranged between the door inner and the door trim such that the stay damper extends rearwardly from a front end thereof which is attached to the hinge pillar and to a rear end thereof which is attached to the door inner.
Abstract: A method is provided for fitting a curved surface model in a three-dimensional space to a plurality of object points in the three-dimensional space by causing a computer to perform free-form deformation (FFD). Embodiments include the steps of setting closest points corresponding to measurement points on a curved surface model, determining the movement amounts of control points by executing a least squares method to minimize the sum of squares of the distances between the closest points and the measurement points, and fitting the curved surface model to the measurement points by executing FFD based on the movement amounts.
August 24, 2020
October 20, 2022
MAZDA MOTOR CORPORATION, NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITY
Abstract: A central control device and a plurality of relay devices constitute a backbone network. Each of the relay device includes: a backbone-side communication port connected to a backbone network; a plurality of device-side communication ports configured to input and output a signal to/from an onboard device; and a first interface conversion device configured to perform interface conversion between the backbone-side communication port and the device-side communication ports. The device-side communication ports include a plurality of general-purpose communication ports to which a common input circuit and/or output circuit is connected. A predetermined first onboard device is directly connected to the general-purpose communication ports, whereas a predetermined second onboard device is connected to the general-purpose communication ports via a predetermined first onboard device.
August 6, 2020
October 20, 2022
Mazda Motor Corporation, Toyota Jidosha Kabushiki Kaisha
Abstract: An on-board network system includes: a main arithmetic unit; a plurality of communication paths extending in different directions toward respective portions of a vehicle body; a plurality of sub-arithmetic units on the communication paths; and a storage device storing a priority order of communications according to a type of communication data. At a disturbance of one of the communication paths connected to one of the sub-arithmetic units, the main arithmetic unit reduces communications having a priority lower than a predetermined criterion and assigns, to the area with the communications reduced, communication data having a priority higher than the predetermined criterion among the communication data in the one of communication paths disturbed to continue communications in the other communication paths.
Abstract: A front vehicle-body structure of a vehicle that enables smooth compressive deformation of a front side frame from the front side thereof on a vehicle frontal collision portion. The front vehicle-body structure of a vehicle includes a pair of left and right front side frames extending in a vehicle front-rear direction is characterized in that each of the front side frames is formed such that a rear side portion has a higher rigidity than a front side portion, and rigidity differences are alternately formed in the vehicle front-rear direction in each of regions of the front side portion and the rear side portion.
Abstract: Disclosed is a vehicle control method which comprises the steps of: determining whether or not a squat of a rear end of a vehicle body is equal to or greater than a given level; determining whether or not turning manipulation of a steering device has been made; and, when the turning manipulation of the steering device is determined to have been made, controlling each part of an engine (4) to reduce an output torque of the engine (4), wherein, in response to the determination that the turning manipulation of the steering device has been made, a reduction amount of the output torque of the engine is increased when the squat of the rear end of the vehicle body is equal to or greater than the given level, as compared to when the squat is less than the given level.
Abstract: Upper frames and a lower frame that connect a rear end of a coupled body composed of a side sill and a rear pillar and a rear side housing to each other are spaced apart in a vehicle up-down direction. An inclined angle at which a lower frame is inclined to be closer to a vehicle inner side toward a vehicle rear side is larger than inclined angles at which the upper frames are inclined to be closer to the vehicle inner side toward the rear side. A lower joined portion to which a rear end of the lower frame is joined is on a vehicle-width-direction inner side with respect to an upper joined portion in the rear side housing, which is composed of a single member including at least the lower frame rear-end joined portion, and the first and second upper frame rear-end joined portions, and extending therebetween.
Abstract: The bushing includes an outer cylinder, an inner cylinder, and an elastic body therebetween. The outer cylinder has a central recess portion formed in a curved shape. The inner cylinder has a central convex portion being formed in a curved shape. A distance between a vertex of the central recess portion and the vertex of the central convex portion is smaller than a distance between a point other than the vertex of the central recess portion and a point at which a straight line extending from the point other than the vertex of the central recess portion to an intersection point of the perpendicular line and the axis of the inner cylinder intersects the central convex portion.
October 3, 2019
Date of Patent:
October 18, 2022
MAZDA MOTOR CORPORATION, MOLTEN CORPORATION