Pressure sensor device

A pressure sensor device comprising:

• a casing defining a chamber and an inlet passage of the chamber,
• a pressure sensor having a sensor body with a cavity and a membrane, the sensor body being accommodated in the chamber such that the membrane is susceptible to deformation under pressure of a fluid present in the inlet passage,
• a circuit arrangement to which the pressure sensor is electrically connected, the circuit arrangement including a circuit support at least partially accommodated in the chamber,
• wherein the sensor body is not rigidly associated to the casing and/or other parts of the device, and is mounted elastically or in a moveable manner with respect to the casing and/or to said other parts inside the chamber,
• wherein accommodated in the chamber is a positioning body, configured as a separate component with respect to the pressure sensor, to the circuit support and to the casing, the positioning body being at least partially interposed between the sensor body and the circuit support,
• wherein the circuit arrangement comprises an electric connector including connection terminals each having a first portion which is extended inside the chamber and a second portion which is extended outside the chamber and wherein operatively interposed between the first portion of the terminals and the circuit support are elastic contact elements, adapted to elastically press the circuit support onto the positioning body,
• wherein the positioning body is arranged in the chamber spaced apart from the first portion of the terminals and the elastic contact elements are configured and arranged to extend in a compression condition between the first portion of the terminals and the circuit support, and
• wherein the casing has a hydraulic connection portion extended in which is at least one section of the inlet passage, further formed in the connection portion being a passage or seat for the temperature sensor and/or for terminals thereof for connecting to the circuit support.

A pressure sensor device comprising:

• a casing defining a chamber with an inlet passage for a fluid,
• a pressure sensor having a sensor body with a detection membrane, the sensor body being at least partially accommodated in the chamber,
• a circuit arrangement to which the pressure sensor is electrically connected, the circuit arrangement including a circuit support at least partially accommodated in the chamber,
• a plurality of connection terminals each having a first portion which is extended inside the chamber and a second portion which is extended outside the chamber,
• wherein the casing comprises a wall substantially parallel and adjacent to the second portion of the terminals, such wall having a step at a respective end, abutting on which is an end of the terminals of the respective second portion, the second portions of the terminals, the wall and the step having respective dimensions and/or positions such that a surface of the second portions of the terminals is substantially flushed with an edge of the step.

A pressure sensor device comprising:

• a casing defining a chamber with an inlet passage for a fluid,
• a pressure sensor having a sensor body with a detection membrane, the sensor body being at least partially accommodated in the chamber,
• a circuit arrangement to which the pressure sensor is electrically connected, the circuit arrangement including a circuit support at least partially accommodated in the chamber,
• the device having at least one of:
• a spacer body accommodated in the chamber and configured as a separate component with respect to the pressure sensor, to the circuit support and to the casing, the spacer body being at least partially interposed between the sensor body and the circuit support;
• at least one seal element or gasket for elastically mounting the sensor body with respect to the casing and/or to other parts of the device inside the chamber;
• a sensor body in a position spaced apart with respect to the circuit support inside the chamber;
• an electric connector including connection terminals each having a first portion which is extended inside the chamber and a second portion which is extended outside the chamber and wherein operatively interposed between the first portion of the terminals and the circuit support are flexible contact elements, the flexible contact elements being configured and arranged to be in a compression condition between the first portion of the terminals and the circuit support;
• a body accommodated inside the chamber for positioning at least one of the circuit support and the sensor body, the positioning body being configured as a distinct part with respect to the casing and comprising reference and/or positioning means for at least one of the sensor body and the circuit support;
• at least one first and one second casing parts coupled together, and a positioning body for at least one of the circuit support and the sensor body accommodated inside the chamber, the positioning body being mechanically constrained to at least one casing part;
• a layer of electrically conductive material on a surface of the casing defining at least part of the cavity;
• at least one gap or passage in the casing for placing the chamber in communication with the external environment, wherein a protection means is associated to the gap or passage.

A pressure sensor device comprising:

• a casing defining a chamber with an inlet passage for a fluid,
• a pressure sensor having a sensor body with a detection membrane, the sensor body being at least partially accommodated in the chamber,
• a circuit arrangement to which the pressure sensor is electrically connected, the circuit arrangement including a circuit support at least partially accommodated in the chamber,
• the casing is provided with at least one passage for placing the chamber in communication with the external environment, for ventilation purposes and/or for providing reference environmental pressure, the passage having respective protection means,
• wherein the passage comprise a through-hole extending from an inner side to an outer side of a wall of the casing and the protection means comprise a channelling in communication with said through-hole, the channelling being integrally formed with said wall of the casing and extending longitudinally in a transverse direction relative to the through-hole, the channel being longer that the through hole and having at least one open end.