The invention relates to a tire pressure sensing device for detecting the tire pressure in a pneumatic tire, comprising a pressure sensor (6) in a housing (1); a tire valve (11) or another retainer to be fastened to the rim, which bears the housing; a spring element (2), which is connected to the tire valve or the other retainer at one end and to the housing (1) at the other end, wherein the spring element is partially embedded in the housing and the housing has at least one opening (4, 5) in the area in which the spring element is embedded, said opening being partially or completely opened up by a soft component (13), which partially surrounds the spring element.

A modular TPMS sensor with an externally replaceable battery is disclosed. The valve stem facilitates battery replacement with a valve stem core designed to removably secure a battery within the valve stem and a sensor configured with an electrical connection designed to connect the sensor to power from the battery. The valve stem has an interior cavity configured to retain the valve stem core. The battery may be at least partially retained within the valve stem. The removable sensor may be configured to connect to an end of the valve stem distal from the valve stem core. The electrical connection may comprise a spring-loaded terminal configured to connect or disconnect the sensor and battery as the battery is inserted or removed from the valve stem through a valve stem end proximal to the valve stem core, permitting battery replacement without removing or deflating a tire configured with the sensor.

A tire parameter measurement method, device, and system of using the same are described herein. One method includes an inflatable tire and wheel assembly with an internally mounted pressure sensor apparatus, measuring pressure values, associating the sensor to an identification reader to receive the pressure values from the pressure sensor, and notifying a user of the measured pressure.

An assembly comprising a tyre valve (2) and an enclosure (3), wherein the enclosure (3) is adapted to receive a gas pressure monitoring unit, wherein the enclosure (3) comprises a hinge joint, the hinge joint having at least one stationary member connected to the enclosure (3), an axle (6) and a rotatable member (4) arranged to at least partially rotate around the axle (6) and wherein the tyre valve (2) is connected to the rotatable member (5) of the hinge joint. The tyre valve (2) is connected to the rotatable member (4) of the hinge joint by a form-fitting connection which secures the tyre valve (2) against movement in a direction towards the rotatable member (4) and in a direction away from the rotatable member (5).

A transmitter is configured to be integrated with a tire valve attached to a wheel. The transmitter includes a data generating unit, a transmitting unit, and a controlling unit. The data generating unit is configured to generate transmission data. The transmitting unit is configured to transmit the transmission data to a receiver that includes a setting unit that sets a threshold related to control of a vehicle in accordance with a type of the wheel. The controlling unit causes the transmitting unit to transmit the transmission data. The transmission data includes wheel identification information. The wheel identification information is required by the setting unit when setting the threshold and allows the setting unit to recognize the type of the wheel to which the tire valve is attached.

A stemming system is disclosed. The stemming system includes a computing device, a stemming device and an algorithm. The computing device includes data processing hardware and memory hardware in communication with the data processing hardware. The data processing hardware includes a transmitter and a receiver. The stemming device is communicatively-coupled to the computing device. The stemming device includes a base portion and a valve-engaging portion. The valve-engaging portion includes a transducer that obtains a measurement communicated to the receiver of the computing device. The measurement includes at least one physical parameter associated with installing a tire-wheel assembly valve to a wheel throughout a process of disposing the valve within a valve hole of the wheel. The algorithm is executed by a processor of the data processing hardware for analyzing a data signature associated with the measurement for determining if the valve has been adequately or inadequately installed by the stemming device.

The present invention provides a connection structure between a tire pressure monitoring sensor and a tire valve. The connection structure comprises a tire valve and a tire pressure monitoring sensor, wherein the tire valve comprises a valve stem and a rubber body disposed outside the valve stem, one end of the valve stem is provided with an external thread, and a bump is formed on the rubber body; and the tire pressure monitoring sensor comprises a housing, a boss with a threaded hole is formed on the housing, and the housing is formed with a recess on the side where the boss is situated. Among other things, the valve stem extends into the threaded hole of the boss, such that the threaded hole of the boss engages with the external thread of the valve stem, and the bump extends into the recess and is snap-fitted with the recess. The connection structure between a tire pressure monitoring sensor and a tire valve provided by the present invention ensures that the tire pressure monitoring sensor and the tire valve are firmly connected and work in a stable and reliable manner.

Provided is a replacement necessity determination device for a snap-in valve having an inner end to which an air pressure detection device including an air pressure sensor and an acceleration sensor is coupled. A control device of the replacement necessity determination device is configured to predict an angle change amount of the snap-in valve and the air pressure detection device with respect to a wheel caused by a centrifugal force based on a rotational speed of the wheel and an acceleration detected by the acceleration sensor, calculate a degradation indication value of an elastic body of the snap-in valve based on a maximum value of the angle change amount during a period set in advance, and determine necessity of replacement of the snap-in valve based on an integrated value of the degradation indication value.

A valve stem structure disposed at a rim of a tire of a vehicle for connecting to an electronic tire pressure monitoring device in the tire is provided. The valve stem structure includes a tube, an air core, and a conducting wire. The tube has a first inlet, a first outlet communicating with an inner space of the tire, and a second outlet. The air core is switchably disposed at the first inlet, and a compressed air is injected into the tire via the first inlet and the first outlet by switching the air core. The conducting wire is disposed in the tube, and an end of the conducting wire extends out of the tube via the second outlet to be electrically connected to the electronic tire pressure monitoring device. A power source charges the electronic tire pressure monitoring device via the conducting wire.

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.