| 摘要 |
A pressure sensor includes a sensor chip, a pressure receiving diaphragm, a connector case, and a case. A pressure sensing chamber is provide in the connector case and filled with oil. The sensor chip is arranged in the chamber and the diaphragm is fixed to the connector case such that it has contact with the oil and seals the chamber. An O-ring and a welding ring are placed around an edge of the diaphragm and the chamber between the diaphragm and the connector case. The diaphragm is fixed to the connector case via the O-ring and the welding ring and fixed. An inner portion of the welding ring is formed such that it can be placed between the sensor chip, wires, and the diaphragm in the chamber.
|
