Pacific Industrial Company, Ltd.

Setsuhiro Saheki

Yoshitaka Ito

Yasuhisa Tsujita

Youichi Okubo

Akira Momose

Kazunori Sawafuji

Mitiya Katou

Noboru Imao

Seishi Tsunetomi

Koji Ito

A transmitter unit of an apparatus for monitoring the condition of a tire includes a casing having an opening defined in an end of the casing. A transmitter is received in the casing through the opening. The transmitter gathers and wirelessly transmits information regarding the condition of the tire. The casing is secured to the outer circumferential surface of a rim wheel of the tire by an adhesive tape or an adhesive agent. Accordingly, the transmitter unit is capable of being attached to the rim wheel in a suitable manner.

Transmitter unit and tire condition monitoring apparatus

A transmitter is mounted on a wheel of a vehicle by a jig of an automatic mounting machine. The transmitter has a measuring-transmitting portion, a valve stem, and a casing. The measuring-transmitting portion measures data representing the conditions of the tire and transmits data. The valve stem is inserted into the wheel and allows air to flow into the tire. The casing accommodates the measuring-transmitting portion, and has a recessed portion. The jig of the automatic mounting machine is engaged with the recessed portion when the automatic mounting machine holds the valve stem. Therefore, even a valve stem with the casing is easily attached to a valve hole of the wheel by using the automatic mounting machine.

Casing structure of transmitter for use in tire condition monitoring apparatus

Transmitters of a tire condition monitoring apparatus that monitors condition of vehicle tires. Each transmitter has a measuring sensor, a transmission circuit, a vehicle speed sensor and a controller. The measuring sensor measures condition of the corresponding tire. The transmission circuit periodically transmits data representing the tire condition. The vehicle speed sensor detects moving of the vehicle. The controller sets a delay time, the delay time being a period from when the vehicle speed sensor detects moving of the vehicle to when the data representing the condition of the corresponding tire is transmitted. The delay time varies from one transmitter to another.

Transmitter of tire condition monitoring apparatus and tire condition monitoring apparatus

A transmitter for a tire state monitoring apparatus that is easily connected to a wheel in an optimal manner. The transmitter includes a valve stem connected to a wheel to which the tire is attached. Electric components are mounted on a circuit board to detect the state of the tire. A casing accommodates the circuit board in the tire. The casing faces toward an outer circumferential surface of the wheel. A connecting portion connects the casing to the valve stem pivotally about a line perpendicular to the axial direction of the valve stem. A pressing mechanism presses the casing toward the outer circumferential surface of the wheel to restrict pivoting of the casing.

Transmitter for tire state monitoring apparatus

A transmitter is attached to a wheel of a vehicle and transmits data indicating a condition of a tire of the vehicle. A mounting structure of the transmitter has a casing, a pin and a fastener cap. The casing accommodates the transmitter. The casing has a through hole. The pin is attached to the wheel and inserted into the through hole of the casing. The fastener cap is fastened to the pin such that the casing does not come off the pin.

Mounting structure of transmitter for tire condition monitoring apparatus

A mounting structure for a transmitter of a tire condition monitoring apparatus that enables the transmitter to be attached to wheels having different cross sectional shapes. A wheel has a drop center and a rim formed integrally with the drop center at a predetermined angle relative to the drop center. The mounting structure includes a valve stem arranged on the rim and having a basal end. A casing houses the transmitter. A coupling fixture couples the casing and the valve stem. The coupling fixture includes a coupler coupled to the basal end of the valve stem, an anchor for anchoring the casing, and a connection for connecting the coupler and the anchor so that the coupling fixture is resilient. The angle between the coupler and the anchor is greater than a predetermined angle before the coupling fixture couples the casing and the valve stem.

Transmitter mounting structure for tire condition monitoring apparatus

A tire condition monitoring apparatus monitors the condition of a tire of a vehicle. A transmitter of the apparatus includes an installed portion, a casing, and arms. A tire condition detecting element is installed in the installed portion. The casing accommodates the installed portion. The installed portion is connected to the casing by the arms. The arms tolerate reactive force and protect the installed portion from that reactive force.

Transmitter for monitoring the condition of a tire

A transmitter of a tire condition monitoring apparatus that has a superior moisture resistant characteristic, enables reduction in size, and facilitates manufacturing. The transmitter includes a casing formed from resin. An electric circuit unit is arranged in the casing to detect the condition of the tire and generate a signal corresponding to the condition of the tire. A battery is arranged in the casing to supply the electric circuit unit with power. The casing is insert molded to embed the electric circuit unit and the battery in the resin forming the casing.

Transmitter of tire condition monitoring apparatus and method for manufacturing transmitter of tire condition monitoring apparatus

A transmitter includes a main body and a valve stem. The main body has a resin casing, which includes a cylinder. A metal cylindrical collar is inserted in the cylinder. An inserting section of the valve stem is inserted in the collar, and a nut is fastened to a threaded portion of the inserting section. Accordingly, the cylinder and the collar are clamped between a step of the valve stem and the nut. The fastening force of the nut is applied mainly to the collar, thus barely affecting the cylinder. As a result, the valve stem is reliably attached to the main body in a stable manner.

Transmitter for tire condition monitoring apparatus

A tire air pressure monitoring apparatus includes a plurality of transmitters provided in respective tires on a vehicle and a receiver mounted on the body frame of the vehicle. Each transmitter radio-transmits data regarding the internal air pressure of the associated tire. The receiver receives radio-transmitted data from each transmitter. The receiver displays the received data on a display and stores the data in a non-volatile memory. When a request signal from a predetermined external communication apparatus is received, the receiver radio-transmits data stored in the non-volatile memory to the external communication apparatus. This allows various kinds of data such as air pressure data to be easily loaded from the receiver to the external communication apparatus.

Tire air pressure monitoring apparatus and external communication apparatus

A transmitter casing has an upper plate and a lower plate, which face each other. A rib is located to incline with respect to the lower plate between the upper plate and the lower plate. The rib prevents the tire from interfering to the casing if the tire is detached from the wheel. This enables smooth detaching of a tire from a wheel without interference with the transmitter, and to strengthen the casing of the transmitter.

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Ogaki, Japan

Setsuhiro Saheki