Patent ID: 8875565

Claim:
A device integrating a pressure sensor for measuring pressure in an internal combustion engine, the device comprising: a first tubular zone extending along a center axis; a finger fixed inside the first tubular zone; a second tubular zone having a greater outside diameter than the first tubular zone and extending the first tubular zone; and an annular elastically deformable part lying in a plane transverse to the center axis and the first tubular zone and connecting the first tubular zone to the second tubular zone; a member fastened to the finger; and a fixed interface fastened to the second tubular zone, wherein the pressure sensor is located between the member fastened to the finger and the fixed interface fastened to the second tubular zone, and the interface has a first zone of axial contact with a portion of the second tubular zone, the first zone of axial contact extending transverse to the center axis, the interface being configured to prevent upward pivoting of the annular elastically deformable part by the zone of axial contact with the second tubular zone, wherein the interface further has a second zone of lateral contact corresponding either to a lateral bearing zone between the interface and an interior face of the second tubular zone or to a zone of the interface having an outside diameter corresponding to an outside diameter of the second tubular zone, and the second zone of lateral contact has a small height compared to the interface so that the interface has a third zone above the second zone of lateral contact, in which there is a gap between the third zone and an exterior wall, the second tubular zone of the exterior wall having a region of least thickness facing the interface above the second zone of lateral contact.