Abstract: A reception control section obtains the rotation angles of wheel assemblies when receiving transmission data by a reception circuit. The reception control section divides 360°, which is the range of the possible rotation angles of the wheel assembly, into equal parts to obtain angle ranges and assigns each of the obtained rotation angles to one of angle ranges. The reception control section derives the angle range in which the number of times (frequency) the obtained rotation angles are included is a maximum value. The reception control section calculates a reception-side angle difference, which is the difference between the median values of the angle ranges in which the number of times the obtained rotation angle is included is a maximum value. The reception control section associates the ID codes with the wheel assemblies based on the correspondence between the reception-side angle difference and the angle difference between specific angles.

Abstract: A flow control valve in which a needle-shaped valve element is fitted into a valve hole provided in a partition wall partitioning a flow path at an intermediate portion, and the valve element moves in an axial direction of the valve element to control a flow rate of a fluid passing between an outer side surface of the valve element and an inner side surface of the valve hole, the flow control valve includes: a tapered inner side surface that is included in the inner side surface of the valve hole; and a tapered outer side surface that is included in the outer side surface of the valve element, faces the tapered inner side surface from inside, and is inclined along the tapered inner side surface.

Abstract: A bracket that is pressed against and fixed to an outer peripheral surface of a rim of a tire wheel by a belt wound around the outer peripheral surface of the rim, and detachably holds an electric circuit unit includes: a pair of rim contact portions that are provided at both ends in a circumferential direction of the rim in a rim facing surface facing the outer peripheral surface of the rim, and come into contact with the outer peripheral surface of the rim in such a way as to cause a portion between the both ends to be spaced apart from the outer peripheral surface of the rim.

Abstract: A vehicle has a detecting section that detects, as a detection value, a rotational angle of each wheel assembly. A transmitter provided in each wheel assembly transmits transmission data when the rotational angle of the wheel assembly is any of specific angles. At the performance of transmission at the specific angle, the transmitter changes data that is different from angular data indicating the rotational angle of the wheel assembly and is included in the transmission data in accordance with the specific angle. A vehicle-mounted receiver collects the detection values detected by the detecting section upon reception of the transmission data. The receiver collects the detection values for each piece of the transmission data transmitted at the same specific angle based on a manner in which data included in the received transmission data is changed in accordance with the specific angle.

Abstract: A valve core includes: a barrel part that is cylindrical; a barrel packing that surrounds an outer lateral surface of the barrel part; a washer through which the barrel part penetrates and which 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, wherein a lower surface of the head part abuts on the washer from above.

Abstract: A fuel solution introducing method introduces a fuel solution into a tire. The tire includes a transmitter configured to transmit data that includes a detection result detected by a sensor to a receiver. The transmitter is operated with, as a power source, an organic power generation element configured to generate power through a chemical reaction with organic matter contained in the fuel solution. The fuel solution introducing method includes introducing the fuel solution and gas into the tire from a tire valve arranged on a wheel to which the tire is attached.

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: A connector to connect electric circuits inside and outside the tire includes: a tubular terminal penetrating the connector attachment hole; an outer seal member surrounding outside the tubular terminal and elastically deformed by being pressed against a tire wheel to provide a seal between the tire wheel and the tubular terminal; an inner seal member filled inside the tubular terminal; one or more rod-shaped terminals penetrating the inner seal member; a plurality of communication holes formed at a plurality of positions in a circumferential direction in an intermediate portion in an axial direction of the tubular terminal; and a plurality of seal communication portions integrally formed with one or both of the outer seal member and the inner seal member and arranged in the plurality of communication holes to transmit, to the inner seal member, elastic force toward the tubular terminal by the elastic deformation of the outer seal 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.

Abstract: An acceleration detecting device includes a power source, an acceleration sensor, an acquiring section, a rotation period calculating section, and an acquisition period setting section. The acceleration sensor is configured to detect a centrifugal acceleration generated by rotation of a wheel assembly. The acquiring section is configured to acquire a detection value from the acceleration sensor with a predetermined acquisition period, thereby acquiring the detection value from the acceleration sensor each time the wheel assembly rotates a constant angle. The rotation period calculating section is configured to calculate a rotation period of the wheel assembly. The acquisition period setting section sets the acquisition period. The acquisition period setting section is configured to increase a number of times the detection value is acquired from the acceleration sensor per rotation of the wheel assembly as the rotation period calculated by the rotation period calculating section becomes longer.

Abstract: A valve core includes: a core body screwed with a female screw part of a core mounting hole and formed of a seal ring, and a support base including a male screw part and a sleeve part; a shaft part penetrating through the support base; a valve body provided at a tip of the shaft part; an overhang part provided at the sleeve part so as to laterally overhang from a basal end of the sleeve part; a plate part provided at the support base so as to project to a basal end side from the basal end of the sleeve part and having a pair of flat tool abutting surfaces; and a shaft receiving hole penetrating through the plate part. The seal ring has a shape of a ring whose cross-sectional shape is quadrangular and the overhang part and the seal ring abut on each other by their surfaces.

Abstract: A tire condition monitoring system includes transmitters that are respectively attached to wheel assemblies of a vehicle. Each transmitter includes a power source, a data generating section, a storage section that stores a correspondence relationship in which ranges obtained by dividing possible values of the detection value of a traveling state detecting section are respectively assigned to a plurality of specific angles set for the rotation angles of the wheel assemblies, and a transmission control section capable of performing specific angle transmission in which the transmission control section transmits the transmission data from the transmitting section when detecting that the rotation angle of the wheel assembly is any of the specific angles. When performing the specific angle transmission, the transmission control section transmits the transmission data when detecting that the rotation angle is the specific angle that corresponds to the detection value of the traveling state detecting section.

Abstract: A valve includes a tubular body having one end attached to a valve attachment hole; a valve opening; a valve member to open and close the valve opening; a shaft part extending axially along an the body; a valve body part extending radially from the shaft to slide in the opening; a valve chamber adjacent to the opening on one end side in the axial direction, connecting the opening and attachment hole entirely; a valve body holding mechanism holding the body part inside the opening as an operating force causing the member to move in the axial direction, allowing the body part to separate from the opening wherein the member receives an operating force moving towards one end side of the body; a retaining mechanism changes between a restricting state wherein the member is prevented from coming off, and a permitting state wherein the member is allowed to come off.

Abstract: A valve includes a tubular body having one end attached to a valve attachment hole; a valve opening; a valve member to open and close the valve opening; a shaft part extending axially along an the body; a valve body part extending radially from the shaft to slide in the opening; a valve chamber adjacent to the opening on one end side in the axial direction, connecting the opening and attachment hole entirely; a valve body holding mechanism holding the body part inside the opening as an operating force causing the member to move in the axial direction, allowing the body part to separate from the opening wherein the member receives an operating force moving towards one end side of the body; a retaining mechanism changes between a restricting state wherein the member is prevented from coming off, and a permitting state wherein the member is allowed to come off.

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.