公开(公告)号：US09958413B2

公开(公告)日：2018-05-01

申请号：US15351675

申请日：2016-11-15

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Daisuke Tahira ,  Keiichi Noda ,  Shingo Ito ,  Atsunori Okada ,  Yuichi Yamada

IPC: G01N27/407 ,  G01N27/409

CPC classification number: G01N27/4074 ,  G01N27/4077 ,  G01N27/4078 ,  G01N27/409 ,  Y10T29/42 ,  Y10T29/49904 ,  Y10T29/49908

Abstract: A method for manufacturing a gas sensor includes: disposing a tubular holder and a tubular compact in a tubular metallic shell defining a through hole, the tubular holder defining a first insertion hole, and the tubular compact defining a second insertion hole; preparing a preliminary assembly in which a pin is inserted into the first insertion hole and the second insertion hole; pulling out the pin from the first insertion hole and the second insertion hole and inserting a sensor element into the first insertion hole and the second insertion hole such that a forward end of the pin will come into contact with an end of the sensor element; compressing the compact to thereby fix the sensor element inside of the metallic shell; welding a protection sleeve to the metallic shell to thereby form a semi-assembly; and combining the semi-assembly with another semi-assembly to thereby form the gas sensor.

公开(公告)号：US09354142B2

公开(公告)日：2016-05-31

申请号：US14278241

申请日：2014-05-15

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Daisuke Tahira ,  Shingo Ito ,  Keiichi Noda ,  Yuichi Yamada ,  Makoto Kume

IPC: G01N1/00 ,  G01M15/10 ,  G01N27/407

CPC classification number: G01N27/4077 ,  G01M15/102 ,  G01N1/00 ,  G01N27/407

Abstract: Disclosed is a gas sensor including a metal shell, a ceramic holder placed in an axial inner hole of the metal shell and a sensor element inserted through an insertion hole of the ceramic holder. The ceramic holder has a recessed hole recessed toward the rear from a front-facing surface of the ceramic holder. The sensor element has, at a front end part thereof, a detection portion covered with a porous protection layer such that a rear end part of the protection layer is accommodated in the recessed hole with a space left therebetween. Further, the ceramic holder has a front circumferential edge defined between an inner circumferential surface of the recessed hole and the front-facing surface of the ceramic holder such that the whole of the front circumferential edge is located radially inside of a radially innermost position of the axial hole.

Abstract translation: 公开了一种气体传感器，其包括金属壳，设置在金属壳的轴向内孔中的陶瓷保持器和通过陶瓷保持器的插入孔插入的传感器元件。 陶瓷保持器具有从陶瓷保持器的前表面向后凹入的凹入孔。 传感器元件的前端部分具有覆盖有多孔保护层的检测部分，使得保护层的后端部分容纳在凹孔中并留有空隙。 此外，陶瓷保持器具有限定在凹孔的内周面和陶瓷保持件的前表面之间的前周缘，使得前周缘的整体位于径向最内侧的位置 轴向孔。

公开(公告)号：US11199474B2

公开(公告)日：2021-12-14

申请号：US16362851

申请日：2019-03-25

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Keiichi Nodo ,  Keiichi Noda ,  Ryuta Fukano ,  Yasuhiro Ishiguro ,  Shoji Akatsuka

IPC: G01M15/10

Abstract: Disclosed is a sensor, including: a sensor body having a cylindrical case and a sensor element accommodated in the case; a seal member disposed in a rear end part of the case; lead wires electrically connected to the sensor element and extending from inside to outside of the casing through the seal member; and a cylindrical heat shield tube retained to an outer surface of the case and extending rearward from the case so as to circumferentially surround the seal member and parts of the lead wires, characterized in that: the sensor further includes a cylindrical tube cap made of an elastic material and arranged to restrict a rearward movement of the heat shield tube; the tube cap has formed therein at least one lead wire insertion hole through which the lead wires are inserted; and the tube cap is reduced in diameter and held to the lead wires.

公开(公告)号：US09612223B2

公开(公告)日：2017-04-04

申请号：US14710762

申请日：2015-05-13

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Daisuke Tahira ,  Keiichi Noda ,  Shingo Ito ,  Atsunori Okada ,  Yuichi Yamada

IPC: G01N27/407 ,  G01N27/409

CPC classification number: G01N27/4074 ,  G01N27/4077 ,  G01N27/4078 ,  G01N27/409 ,  Y10T29/42 ,  Y10T29/49904 ,  Y10T29/49908

Abstract: A method for manufacturing a sensor intermediate product includes: disposing a tubular holder and a tubular compact in a tubular metallic shell, and inserting a metallic pin into a first insertion hole of the holder and a second insertion hole of the compact; compressing the compact so as to form a filling member intermediate having a shape which brings the filling member intermediate into pressure contact with the inner wall surface of the metallic shell and allows removal of the metallic pin from the second insertion hole; pulling out the metallic pin from the first insertion hole and the second insertion hole; inserting a sensor element into the first insertion hole and the second insertion hole; and compressing the filling member intermediate to thereby form a filling member which fixes the sensor element inside of the metallic shell.