Bridgestone Corporation

Shigeru Yamaguchi

Takao Kokubu

Hiromasa Hada

A tire-state detection device according to the present invention includes: an electronic component including a detection unit that detects a pressure of a tire; and a case that houses the electronic component. The case includes: a case main body that houses the electronic component and that has an open surface formed thereon; and a lid member that covers the open surface. The detection unit includes: a pressure sensor section having a diaphragm-type element; a sensor control section that controls the pressure sensor section; and a dome-shaped shield cover that covers the pressure sensor section and the sensor control section. An inside of the case main body having the open surface covered with the lid member is filled with a sealant, and the diaphragm-type element is made of a ceramic.

Tire-state detection device

A structurefor attaching an electronic component to the inner surface of a pneumatic tire includes: a casewhich has a bottom platea side walland a lidand in which the electronic component is mounted inside an inner space defined by these; and a rubber patchdisposed between the caseand the inner surface of the pneumatic tire. The rubber patchhas a bottom surfaceto be attached to the inner surface of the pneumatic tire, and a front surfaceprovided on the opposite side from the bottom surface. A seating surfacehaving such a shape as to be capable of receiving the bottom plateof the caseis formed in the front surface. The rubber patchhas a groovein the front surface

Structure for attaching electronic component to inner surface of pneumatic tire

A tire inside information acquiring device () attached inside a tire-wheel assembly, includes a housing body () configured to house a receiving antenna for receiving a radio signal and an electronic circuit unit connected to the receiving antenna, the electronic circuit unit constitutes the tire inside information acquiring device (), and a substrate () on which the housing body () and a component constituting the tire inside information acquiring device () are disposed. The housing body () is formed of a nonmetallic inorganic material. The component is only formed of parts having water resistance.

Device for acquiring information regarding the inside of a tire

A tire condition detecting device according to the present invention includes: an electronic component including a sensor configured to detect a tire condition; and a casing configured to house the electronic component. The casing includes a casing main body configured to house the electronic component and having an opening surface formed thereon, and a lid unit configured to cover the opening surface. An inside of the casing main body having the opening surface covered by the lid unit is filled with a sealant. Accordingly, tire conditions such as inner pressure and temperature of a tire can be surely detected and a breakdown of an electronic component can be prevented even in an environment where water content such as a coolant is injected in the tire.

Tire condition detecting device

Identification information for identifying a tire, a tire inner pressure and a tire inner temperature are sent to a tire checking device from a first electronic device provided within a tire and measured results are shown on a display. Groove depth data from a depth meter are also received by the tire checking device and shown on the display. The tire checking device stores received management information such as a tire inner pressure, a tire inner temperature, a groove depth and so on in a memory with associating them with each tire. The stored management information is extracted by a control unit if required and shown on the display. Therefore, a tire inner pressure and a tire inner temperature are detected automatically and groove depth data are stored with being associated with each tire, and thereby the tire inner pressure, the tire inner temperature and the groove depth data can be displayed.

Tire checking device, tire checking system and tire checking method

An elastic memberpositioned between an inner surface of a casingand a front face of a pressure sensing portionof a pressure sensorreduces a possibility of liquid and foreign matters in a tire directly reaching the pressure sensing portion. The elastic member also increases adhesiveness between the pressure sensing portionof the pressure sensorand a labyrinth structure and further prevents a potting agentfrom flowing into the sensing portion. Moreover, the elastic memberis a member constituting at least a part of the labyrinth structure, so that it does not need that a wall is provided on the pressure sensorand a dedicated seal member is provided on the pressure sensing portion

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Kodaira, Japan

Shigeru Yamaguchi