Abstract: A tire condition detecting device includes a case, a detecting section, which is accommodated in the case to detect a condition of a tire, an attachment portion provided in the case, an insertion hole, which is provided in the attachment portion and is configured to allow a snap-in valve to be inserted into the insertion hole, and a case-side fitting portion, which is provided in the attachment portion to be positioned outward of the insertion hole in a direction orthogonal to a central axis of the insertion hole, and is configured to be fitted to a clamp-in valve. The snap-in valve inserted into the insertion hole or the clamp-in valve fitted to the case-side fitting portion is attached to the case with a fixing tool.
Abstract: A valve includes a sleeve, a shaft supported inside the sleeve such as to be movable linearly and having one end positioned more forward than a first end face of the sleeve, a valve body extending sideways from one end of the shaft, an elastic member surrounding the sleeve and fixedly joined to an outer side face of the sleeve, a press-fit seal part connected to the elastic member and press-fit into a valve attachment hole of a component to which the valve is mounted to make a contact with an inner side face of the valve attachment hole, and a valve seat seal part connected to the elastic member and covering the first end face of the sleeve, for the valve body to make a contact with and separate from.
Abstract: In an oil pan, an outer surface of an oil pan body is covered with urethane foam material. The outer surface of the oil pan body is cation treated to be a surface-treated layer, and the urethane foam material is adhered to the outer surface of the oil pan body by the surface-treated layer without any gaps therebetween. The oil pan further includes an undulating portion formed on the outer surface of the oil pan body and undulating in an inward and outward direction. The surface-treated layer is formed on the undulating portion and the urethane foam material is adhered to the undulating portion without any gaps therebetween. The undulating portion includes a bowl-shaped recess recessed into a bowl shape toward an inner side of the oil pan body and the urethane foam material is adhered to an entire inner surface of the bowl-shaped recess without any gaps therebetween.
Abstract: The method includes placing a block-shaped second resin on a backside of a composite sheet within outer edges, the composite sheet being made up of a plurality of stacked fiber sheets impregnated with a first resin and pressing the composite sheet and the second resin by a heated mold, to produce a resin molded article having the composite sheet embedded in a part of a surface of a resin layer of the second resin that extends to sides of the composite sheet. The composite sheet is formed such that a first fiber sheet of the plurality of fiber sheets positioned closest to a front side of the composite sheet is larger than other fiber sheets and covers the other fiber sheets entirely from the front side, when placed inside the mold.
Abstract: In order to solve the problem, a valve core according to one aspect of the present disclosure including: a barrel part that is cylindrical; a barrel packing that surrounds an outer lateral surface of the barrel part; a flange part that abuts on the barrel packing from above; and a head part that includes a male screw part at its outer lateral surface and that rotates relative to the barrel part. A lower surface of the head part abuts on the flange part from above.
Abstract: A transmitter is mounted on each of a plurality of wheel assemblies included in a vehicle. The transmitter executes a process in accordance with a command included in a trigger signal. The transmitter includes a pressure sensor that detects the tire pressure, a transmission unit that transmits a data signal including a detection result of the pressure sensor to a receiver, a trigger reception unit that receives the trigger signal, and a controller that controls the transmitter. When the trigger reception unit receives the trigger signal including a command shifting a state of the transmitter to a standby state, the controller shifts the state of the transmitter to the standby state. Further, when the trigger reception unit receives the trigger signal including a command designating a mode while the state of the transmitter is the standby state, the controller sets the designated mode.
Abstract: A tire state monitoring device that is able to stabilize fixing of a sensor unit is provided. A tire state monitoring device includes a tire valve mounted on a tire wheel, a cylindrical nut screwed onto the valve stem of the tire valve, and a sensor unit that detects a tire state and transmits a detection result to an external part. A nut insertion hole, into which the cylindrical nut is inserted, is formed in the sensor unit. An elastic ring member is fitted on the outer peripheral surface of the cylindrical nut and elastically deforms in the radial direction of the cylindrical nut while the cylindrical nut is kept inserted in the nut insertion hole. The sensor unit is held by the cylindrical nut by a resilient force of the elastic ring member.
Abstract: A steering control system includes a steering-motor for turning wheels, a reaction-force-motor for applying a reaction torque to a steering of the vehicle, and a controller. The controller calculates a turning angle based on a first-characteristic representing a relationship of the turning angle to a steering angle, and calculates a reaction torque based on a second-characteristic representing a relationship of a reaction torque to the steering angle. The controller changes the first-characteristic from a characteristic corresponding to a first-state to a characteristic corresponding to a second-state in response to a change in the state of the vehicle from the first-state to the second-state. The controller maintains the second-characteristic at the characteristic corresponding to the first-state when the state of the vehicle changes from the first-state to the second-state in the case where the steering angle is steered to a steering limit corresponding to an upper limit of the turning angle.
March 24, 2020
October 1, 2020
TOYOTA JIDOSHA KABUSHIKI KAISHA, PACIFIC INDUSTRIAL CO., LTD.
Abstract: A vehicle running control system includes: a steering apparatus that includes a turning device being mechanically separated from a steering wheel; a vehicle drive unit; and a control device. The control device is configured to execute: a turning processing that controls the turning device such that an actual turning angle of the wheel approaches a target turning angle; a vehicle driving processing that determines a target vehicle driving force according to a required vehicle driving force based on a vehicle driving request and that controls the vehicle drive unit so as to cause an actual vehicle driving force to the target vehicle driving force determined; and where a turning angle difference is greater than a turning angle threshold value in a low vehicle speed condition, a driving force limiting processing that limits the target vehicle driving force so as to become smaller than the required vehicle driving force.
March 25, 2020
October 1, 2020
TOYOTA JIDOSHA KABUSHIKI KAISHA, PACIFIC INDUSTRIAL CO., LTD.
Abstract: A transmitter includes a condition detecting section, which detects a condition of a tire, a memory section, which stores identification information, a transmitting section, which transmits a data signal, a trigger receiving section, which receives a trigger signal transmitted from a trigger device, and a controlling section. When the trigger receiving section receives the trigger signal, the controlling section generates data corresponding to the trigger signal and causes the transmitting section to transmit the data signal, which includes the generated data. The controlling section generates encrypted data when the trigger receiving section receives a trigger signal of unmodulated waves. The controlling section generates non-encrypted data that includes the identification information when the trigger receiving section receives a trigger signal of modulated waves.
Abstract: A road surface information collection device includes a first sampling unit that samples acceleration sensor's detection results with a first sampling cycle to obtain first sampling data, a position calculator that calculates an acceleration sensor's rotational position based on changes in first sampling data, a second sampling unit that is activated based on a condition that the acceleration sensor is positioned within a first predetermined range including a back side of a point on the tire in contact with the ground, and that samples detection results of the acceleration sensor with a second sampling cycle shorter than first sampling cycle to obtain second sampling data as the road surface information, a speed calculator that detects a rotation speed of the tire based on changes in the first sampling data, and a first predetermined range determination unit that changes the first predetermined range in accordance with the rotation speed of tire.
Abstract: When receiving a transmission signal, a reception controller obtains a pulse count value of each of rotation sensor units. Next, the reception controller compares, with a threshold, the difference between the obtained pulse count value and a previously obtained pulse count value. The reception controller identifies, based on the result of comparison between the difference between pulse count values and the threshold, the positions of wheel assemblies, in each of which a transmitter is provided.
Abstract: A tire condition detecting device includes a controlling section that determines whether there is an anomaly in the tire based on the condition of the tire detected by the condition detecting section. A protocol that is designated by a trigger device is defined as a first protocol, and protocols that are not designated by the trigger device are defined as second protocols. When determining that there is no anomaly in the tire, the controlling section causes the transmission section to transmit only the data signals using the first protocol. When determining that there is an anomaly in the tire, the controlling section causes the transmission section to transmit the data signals using the second protocols in addition to the data signals using the first protocol.
Abstract: Each of transmitters attached to respective wheel assemblies transmits transmission data when the wheel assembly reaches any of specific angles set at equal angular intervals. A receiver mounted in the vehicle obtains the rotation angles of the wheel assemblies from a rotation angle detecting section upon reception of the transmission data and obtains specific rotation angles by correcting the obtained rotation angles by using the value of the angle difference between the specific angles. The specific rotation angles are values that can be regarded as rotation angles that are obtained upon reception of the transmission data transmitted at the same specific angle. The receiver identifies the correspondence between ID codes included in the transmission data and the wheel assemblies by using the specific rotation angles.
Abstract: A reception control section obtains a rotation angle of each wheel assembly when a reception circuit receives transmission data. The reception control section calculates the absolute value of the difference between the obtained rotation angle and a previously obtained rotation angle. The reception control section determines whether the absolute value of the difference is included in a reference range or a specific range. The reference range includes 0. The specific range includes the angle difference between specific angles.
Abstract: The tire state detecting device includes a calculating unit that calculates an acceleration difference of the gravitational acceleration value acquired at a first acquiring angle and the gravitational acceleration value acquired at a second acquiring angle; a storage unit that stores a correction formula defined in advance based on an angular difference between the adjacent acquiring angles and an angular difference of the first acquiring angle and the second acquiring angle, and corrects the first acquiring angle to an angle determined in advance from the acceleration difference; a transmission unit that transmits a transmission signal including information indicating the angle determined in advance in addition to information indicating the state of the tire; and a control unit that causes the transmission signal to be transmitted to a wheel position specifying device.
Abstract: A valve core capable of suppressing manufacturing costs, including: a first core cylinder body, a second core cylinder body having a valve opening on an opposite side to the first, a movable member having a valve body which opens and closes the valve opening at the front end of a shaft section linearly movably extending through the insides of the core cylinder bodies, an elastic member in contact with the movable member and the first body and biasing to sandwich the second body between the first and valve body, and a pair of fitting sections including a first and a second fitting section on the core cylinder bodies and which are rotatably fitted and are separable from each other without interfering. The fitting sections have cylindrical shapes that are detachably fitted to each other, and the first section has a stepped surface with which the second section is in contact.
Abstract: A transmitter includes a transmitter control section, which generates transmission data to be transmitted to a receiver. The transmission data contains variable data and verification data. The verification data is data for causing a verifying section of the receiver to verify an ID code registered in the transmitter against an ID code registered in the receiver. The transmitter control section is capable of switching between a first state and a second state. The first state is a state in which fixed data representing identification information is transmitted as the verification data. The second state is a state in which computation data computed from the variable data and the fixed data is transmitted as the verification data.
Abstract: An object is to provide a more compact motor-operated valve than conventional ones. The motor-operated valve according to the present disclosure includes a first housing chamber housing a first valve body, a second housing chamber housing a second valve body, and an intermediate chamber interposed therebetween, which are arranged in a line. A shaft is placed to connect the first valve body and the second valve body. The first valve body is fitted into a first fitting portion in the first housing chamber so as to be linearly movable. The second valve body is fitted into a second fitting portion in the second housing chamber so as to be linearly movable. An inside of the first fitting portion and an inside of the second fitting portion communicate with an inside of the intermediate chamber through an air passage provided in the shaft.
Abstract: A tire valve unit includes a tire valve and a sensor unit. The tire valve includes a valve stem and a rubber body located on the periphery of the valve stem. The sensor unit includes a sensor mounted on a wheel and a housing that accommodates the sensor and is secured to the tire valve. The tire valve unit is mounted on the wheel by press-fitting the tire valve into a mounting hole in the wheel. The body includes an attaching portion. The tire valve includes an attaching projection that projects in the axial direction of the tire valve from the inside of the attaching portion toward the outside. The tire valve unit further includes a fixture that secures the attaching projection to the housing.