Patent ID: 9671256
Date: 2017-06-06
CPC Classifications: G01D

Claim:
1. A proximity sensor comprising: a body including a coil bobbin at a first end; a coil wound around a winding drum portion of the coil bobbin; a cap being cylindrical and having a bottom, to be placed to the body so as to cover the coil bobbin; a hollow housing which includes, at a first end, a circular-cylinder portion having an opening, and is to be placed to the body in such a manner that the cap protrudes from the opening; and a ring-shaped sealing member disposed between an outer peripheral surface of the cap and an inner peripheral surface of the circular-cylinder portion of the housing, wherein the coil bobbin includes a flange portion at a lower end part of the winding drum portion, an adhesive agent, which is formed at a gap between the coil bobbin and an inner peripheral surface of the cap, bonds the coil bobbin and the cap, and the adhesive agent and the coil faces each other via an air-gap at an upper part of the flange portion.