Sealing pin, pressure detention module and pressure sensor
AssigneeMeasurement Specialties (China) Ltd.
InventorsTinghui (Felix) Fu, Xu Liang, Long (Allen) Wang
Life of this patent
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Abstract
A sealing pin includes a body part and an end part connected to the body part. The body part is insertable into a liquid filling path of a pressure sensor. The body part has a groove on an outer surface. The end part seals a liquid filling port of the liquid filling path. When the sealing pin is inserted into the liquid filling path, an external media pressure applied to a diaphragm of the pressure sensor is transmitted to a pressure detection chip of the pressure sensor through a liquid in the groove.
Claims20
A pressure sensor, comprising:
- a liquid filling path having a liquid filling port;
- a diaphragm;
- a pressure detection chip;
- and
- a sealing pin having a groove, the sealing pin is inserted into the liquid filling path and seals the liquid filling port, an external media pressure applied to the diaphragm is transmitted to the pressure detection chip through a liquid in the groove.
A pressure detection module, comprising:
- a main body having a liquid filling cavity including a liquid filling path;
- a diaphragm attached to the main body and transmitting an external media pressure to a liquid in the liquid filling cavity;
- a pressure detection chip installed on the main body and detecting a liquid pressure in the liquid filling cavity;
- and
- a sealing pin including a body part inserted into the liquid filling path, the body part having a groove on an outer surface, and an end part connected to the body part, the end part sealing a liquid filling port of the liquid filling path, the external media pressure applied to the diaphragm is transmitted to the pressure detection chip through a liquid in the groove.
A pressure sensor, comprising:
- a housing;
- and
- a pressure detection module installed in the housing, the pressure detection module including:
- a main body having a liquid filling cavity including a liquid filling path;
- a diaphragm attached to the main body and transmitting an external media pressure to a liquid in the liquid filling cavity;
- a pressure detection chip installed on the main body and detecting a liquid pressure in the liquid filling cavity;
- and
- a sealing pin including a body part inserted into the liquid filling path, the body part having a groove on an outer surface, and an end part connected to the body part, the end part sealing a liquid filling port of the liquid filling path, the external media pressure applied to the diaphragm is transmitted to the pressure detection chip through a liquid in the groove.
Dependencies are inferred from the claim text.