Patent ID: 9335311
Filing Date: 2016-05-10
CPC Classification: G01N

Claim Text:
1. A gas sensor comprising: a gas sensor element extending in a direction of an axis, the gas sensor element having a detection portion provided at a forward end thereof for detecting a particular gas component in a gas to be measured, the gas sensor element is an elongated plate-shaped element having an outer surface, and the gas sensor element having an electrode pad on the outer surface provided at a rear end portion thereof; a metallic shell surrounding a radial circumference of the gas sensor element and holding the gas sensor element therein; an electrically insulating separator having a rear end portion of the gas sensor element disposed within an insertion hole thereof; a connection terminal which is inserted into the insertion hole and whose forward portion extends in the direction of the axis and is electrically connected to the electrode pad; a trunk member having a body portion surrounding the separator, and a connector portion extending from the body portion in a radial direction intersecting the direction of the axis and configured to allow an external device to be inserted thereinto and removed therefrom; and a connector terminal held in the connector portion and extending through the connector portion in a radial direction intersecting the direction of the axis; wherein the connection terminal has, at a rear end portion, a first connection portion electrically connected to the connector terminal, and the connector terminal has, at an end portion on a side toward the separator, a second connection portion electrically connected to the first connection portion; one or both of the first connection portion and the second connection portion is bent such that the first connection portion and the second connection portion are juxtaposed with one another; one of the first connection portion and the second connection portion assumes the form of an insertion piece, the other one assumes the form of a female portion into which the insertion piece is inserted, and at least one of the insertion piece and the female portion has an elastic portion elastically bendable in a direction intersecting a direction of juxtaposition of the first connection portion and the second connection portion; and the insertion piece is fitted into the female portion such that the elastic portion elastically bends in the intersecting direction, whereby the first connection portion and the second connection portion are elastically connected.