Valve assembly for tire pressure sensing

Abstract

This invention relates to a tire pressure sensing valve assembly, comprising: a base, which has a circuit board and a pressure chamber communicating with the circuit board inside, and the assembly part of the base has a first flow channel communicating with the pressure chamber; a valve connector, which is respectively assembled with a valve and the assembly part at both ends and has a second flow channel inside, the inner wall of the valve connector has an internal thread section and the outer wall has an air guide hole, the air guide hole communicating with the second flow channel and the first flow channel respectively; an adapter, which is locked inside the valve connector and has an external thread section on the outer wall that locks the internal thread section of the valve connector, and an air guide channel communicating with the air guide hole is formed between the external thread section and the internal thread section; when the base is locked onto the valve stem of the valve through the adapter, part of the gas generated by the valve flows into the second flow channel, and then flows into the air guide hole through the air guide channel, flows into the first flow channel through the air guide hole, and then flows into the pressure chamber through the first flow channel, so that the circuit board can sense the gas state of the pressure chamber.

Claims

1. A valve assembly for tire pressure sensing, mounted on the valve stem of a tire, comprising: A base has a connecting portion protruding from one side of the base. The base contains a circuit board and a pneumatic chamber communicating with the circuit board. The connecting portion has a first flow channel communicating with the pneumatic chamber. An air nozzle connector has two ends respectively connected to the connecting portion of the base and has a second flow channel inside. The inner wall of the air nozzle connector has an internal thread section, and the outer wall has an air guide hole. The air guide hole communicates with the second flow channel and the first flow channel. An adapter is locked inside the air nozzle connector and has an outer thread section on its outer wall corresponding to the internal thread section of the air nozzle connector. An air guide channel communicating with the air guide hole exists between the external thread section and the internal thread section. When the base is locked to the valve stem of the nozzle through the adapter, part of the gas generated by the nozzle flows into the second flow channel and then flows to the air guide hole through the air guide channel. It then flows into the first flow channel through the air guide hole and finally into the air pressure chamber through the first flow channel, so that the circuit board connected to the air pressure chamber can sense the gas state of the air pressure chamber.

2. The tire pressure sensing valve assembly as claimed in claim 1, wherein a guide hole is provided between the air pressure chamber of the seat and the first flow channel.

3. The tire pressure sensing valve assembly as claimed in claim 1, wherein the base is composed of a first base and a second base, the first base and the second base having corresponding first positioning part and second positioning part respectively, and the circuit board is positioned between the first positioning part and the second positioning part.

4. The tire pressure sensing valve assembly as claimed in claim 3, wherein the first base has a locking hole penetrating the interior of the base body, and the second positioning part and the circuit board have a first through hole and a second through hole corresponding to the locking hole, respectively.

5. The tire pressure sensing valve assembly as claimed in claim 4, wherein the first base has a locking member at the position corresponding to the locking hole, wherein when the valve stem passes through the locking hole, the second through hole and the first through hole into the body and is locked to the adapter, the locking member locks the valve stem to the locking hole, thereby locking the valve stem and the body together.

6. The tire pressure sensing valve assembly as described in claim 1, wherein the valve stem and the adapter are respectively provided with a first locking section and a second locking section at their corresponding locking positions.

7. The valve assembly for tire pressure sensing as described in claim 1, wherein the adapter and the valve stem have communicating adapter channels and valve channels, the adapter channels communicating with the second flow channel, so that the gas from the valve can flow through the second flow channel to the adapter channels and then flow into the tire through the valve channels.

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