公开(公告)号：US09645110B2

公开(公告)日：2017-05-09

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: G01N27/407

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.

公开(公告)号：US09506899B2

公开(公告)日：2016-11-29

申请号：US14252073

申请日：2014-04-14

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Makoto Kume ,  Shingo Ito ,  Daisuke Tahira ,  Takehiro Oba ,  Yuichi Yamada

IPC: G01N33/00 ,  G01N27/407

CPC classification number: G01N33/0009 ,  G01N27/4077

Abstract: A protector (160) is inserted into a metallic shell (110) such that at least a portion of each gas introduction hole (167) is located on the base end side with respect to the forward end (110b) of the metallic shell. The metallic shell has a gas introduction space S2 defined by a forward-end-side inner surface (113b) of the metallic shell and an outer surface (160d) of the protector and which guides a gas-to-be-detected (exhaust gas G) from a region on the forward end side of the metallic shell into the gas introduction holes of the protector. The base end of the forward end portion (121) of the detection element (120) is located on the base end side with respect to the forward end (167b) of each gas introduction hole, and the forward end of the forward end portion is located on the forward end side with respect to the base end (167c) of each gas introduction hole.

Abstract translation: 保护器（160）插入到金属壳体（110）中，使得每个气体引入孔（167）的至少一部分相对于金属壳体的前端（110b）位于基端侧。 金属壳具有由金属壳的前端侧内表面（113b）和保护器的外表面（160d）限定的气体引入空间S2，并且引导气体被检测（废气 G）从金属壳的前端侧的区域进入保护器的气体导入孔。 检测元件（120）的前端部（121）的基端相对于各气体导入孔的前端（167b）位于基端侧，前端部的前端为 位于相对于每个气体导入孔的基端（167c）的前端侧。