Patent ID: 7415877
Filing Date: 2008-08-26
Classification: G01N

Abstract:
1. A gas sensor comprising: a cylindrical metal shell; a plate-like sensor element extending in a lengthwise direction and including a front end side exposed to gas to be measured and electrode terminal portions formed on upper and lower surfaces on a rear end side so as to come into contact with connection terminals; and a sleeve held in an inside of the metal shell and including an axial hole in which the sensor element is inserted, wherein the sleeve further includes element guide portions which protrude from an opening end surface on a rear end side of the axial hole and which restrain the sensor element from being inclined in a direction crossing an axial direction of the axial hole, and wherein the sleeve includes a pair of element guide portions which are arranged opposite to each other with respect to a center axial line of the axial hole, so that at least part of the electrode terminal portions of the sensor element are exposed at a gap between the pair of element guide portions.