公开(公告)号：US20140260531A1

公开(公告)日：2014-09-18

申请号：US14202820

申请日：2014-03-10

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Takehiro OBA ,  Yuichi YAMADA ,  Shingo ITO ,  Makoto KUME

IPC: G01N33/00

CPC classification number: G01N27/4078

Abstract: A gas sensor includes a sensor element having electrode take-out portions; a tubular separator having a flange portion, surrounding the electrode take-out portions, and spaced from a metallic shell; a tubular outer sleeve covering the separator, connected to the metallic shell, and having an inward convex portion that contacts the rearward-facing surface of the separator and restricts rearward movement of the separator; a seal member disposed on the rear of the separator and accommodated in a rear portion of the outer sleeve such that it is spaced from the separator; and an annular retainer fixed to the outer sleeve and in contact with a contact surface which forms at least a portion of the forward-facing surface of the flange portion. The separator has a rotation restriction surface for restricting its rotation in the circumferential direction, and the retainer has an engagement surface which contacts the rotation restriction surface.

Abstract translation: 气体传感器包括具有电极取出部分的传感器元件; 管状分离器，其具有围绕电极取出部分并与金属壳间隔开的凸缘部分; 覆盖隔板的管状外套筒，连接到金属外壳，并且具有接触分离器的后向表面的向内凸出部分，并限制分离器的向后运动; 密封构件，其设置在所述隔板的后部并且容纳在所述外套筒的后部中，使得其与所述隔板隔开; 以及固定到所述外套筒并与形成所述凸缘部分的朝前表面的至少一部分的接触表面接触的环形保持器。 隔板具有用于限制其在圆周方向上的旋转的旋转限制表面，并且保持器具有接触旋转限制表面的接合表面。