公开(公告)号：US09581565B2

公开(公告)日：2017-02-28

申请号：US14278246

申请日：2014-05-15

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Makoto Kume ,  Nobuhiro Inoue ,  Daisuke Tahira ,  Shingo Ito ,  Yuichi Yamada

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

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

Abstract: Disclosed is a gas sensor having a metal shell, a holder placed in the metal shell and a sensor element inserted through an axial insertion hole of the holder. The holder has a recessed portion recessed toward the rear from a front end face of the 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 of the porous protection layer is situated within the recessed portion of the holder and is located at the rear side with respect to the front end face of the holder while maintaining a space between an inner circumferential surface of the recessed portion and an outer circumferential surface of the porous protection layer.

Abstract translation: 公开了一种气体传感器，其具有金属外壳，保持器放置在金属外壳中，以及通过保持器的轴向插入孔插入的传感器元件。 保持器具有从保持器的前端面朝向后方凹陷的凹部。 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，使得多孔保护层的后端位于保持器的凹部内并位于相对于 同时保持凹部的内周面与多孔保护层的外周面之间的空间。

公开(公告)号：US20150222095A1

公开(公告)日：2015-08-06

申请号：US14419680

申请日：2013-04-10

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Hiroaki Kuki ,  Tomoaki Ueda ,  Yuichi Yamada

IPC: H01T13/20

CPC classification number: H01T13/20 ,  H01T13/16 ,  H01T13/32 ,  H01T13/34 ,  H01T13/36

Abstract: A spark plug includes an insulator and a metal shell arranged around the insulator and having a thread portion formed with a thread diameter of M12. The insulator has an engagement portion held on a step portion of the metal shell via a plate packing and a leg portion located to leave a clearance between the leg portion and an inner circumferential surface of the metal shell. Assuming that: L (mm) is a distance from a front end of the plate packing toward the front; and A (mm) is a size of the clearance, a site of the clearance where the size A becomes 0.5 mm or smaller is located at or rear of a position of 2.0 mm from the front end toward the front; and a relationship of A≧L×0.2+0.2 (mm) is satisfied within a range of 3.0≦L≦4.0.

Abstract translation: 火花塞包括绝缘体和围绕绝缘体布置的金属壳，并且具有形成有螺纹直径M12的螺纹部分。 绝缘体具有通过板状密封件固定在金属壳的台阶部分上的接合部分和位于腿部与金属壳体的内周面之间留出间隙的腿部。 假设：L（mm）是从板状填料的前端向前方的距离; A（mm）为间隙的尺寸，尺寸A变为0.5mm以下的间隙的位置位于从前端朝向前方2.0mm的位置的后方， 在3.0＆amp; NlE; L＆nlE; 4.0的范围内满足A≥L×0.2 + 0.2（mm）的关系。

公开(公告)号：US20130074582A1

公开(公告)日：2013-03-28

申请号：US13629516

申请日：2012-09-27

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Shun Sakuma ,  Shigeki Mori ,  Masaki Mizutani ,  Yuichi Yamada ,  Shohei Yoshiyasu ,  Hirotaka Tsukamatsu ,  Makoto Shimoide

IPC: G01N37/00

CPC classification number: G01N27/4077 ,  G01N27/4071 ,  G01N33/0037 ,  G01N33/004 ,  Y02A50/245

Abstract: A gas sensor including a plate-shaped detecting element is disclosed, wherein the detecting element has a pair of principle surfaces and a pair of side surfaces adjacent to the pair of principle surfaces, in a radical direction thereof, wherein a first chamfered portion is provided between at least one first principal surface of the pair of principal surfaces and the rear end surface of the detecting element, and wherein the angle between a first axis ridgeline portion formed by the first principal surface and a first side surface that is one of the pair of side surfaces and extending in the direction of the axis, and a first width ridgeline formed by the first principal surface and the first chamfered portion and extending in a width direction is larger than 90°.

Abstract translation: 本发明公开了一种具有板状检测元件的气体传感器，其特征在于，所述检测元件具有一对原理面和与所述一对原理面邻接的一对侧面，其沿自由度方向设置有第一倒角部 在所述一对主表面的至少一个第一主表面和所述检测元件的后端表面之间，并且其中由所述第一主表面形成的第一轴线脊线部分和所述第一主表面之一之间的角度 并且沿所述轴线方向延伸，并且由所述第一主表面和所述第一倒角部分形成并在宽度方向上延伸的第一宽度脊线大于90°。

公开(公告)号：US09979162B2

公开(公告)日：2018-05-22

申请号：US15492242

申请日：2017-04-20

Applicant: NGK Spark Plug Co., LTD.

Inventor： Daisuke Kasahara ,  Yuichi Yamada ,  Naoyuki Mukoyama

IPC: H01T13/54 ,  H01T13/04 ,  H01T13/32 ,  H01T21/02 ,  H01T13/16

CPC classification number: H01T13/54 ,  H01T13/04 ,  H01T13/16 ,  H01T13/32 ,  H01T13/52 ,  H01T21/02

Abstract: A plasma jet plug includes a rod-shaped central electrode, an insulator having an axial hole, a metal shell disposed around the insulator, an orifice electrode electrically connected to the metal shell and located at a distal end side of the insulator, and a gasket that contacts an outer surface of the insulator and an inner surface of the metal shell. The insulator includes a first member, a second member and an inorganic seal layer. The first member has the axial hole and includes a large-diameter portion and a small-diameter portion. The second member has a through hole into which the small-diameter portion is inserted. The second member has an outer surface that contacts the gasket. The inorganic seal layer seals a gap between the first member and the second member. In a section including the axis, the sum of seal lengths is greater than or equal to 3 mm.

公开(公告)号：US09837798B1

公开(公告)日：2017-12-05

申请号：US15481543

申请日：2017-04-07

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Yuichi Yamada ,  Yuichi Matsunaga

IPC: H01T13/32 ,  H01T13/39 ,  H01T13/41 ,  H01T21/02

CPC classification number: H01T13/32 ,  H01T13/20 ,  H01T13/39 ,  H01T13/41 ,  H01T21/02

Abstract: A tip that contains a noble metal is joined to a joining surface of an electrode base material of a ground electrode via a welded portion. On cross-sections of the tip and the electrode base material in a longitudinal direction of the joining surface, the welded portion has a void above the joining surface, and a continuous distance of the welded portion on the joining surface is less than or equal to 0.5 mm, whereby thermal stress due to a difference in thermal expansion between the tip and the electrode base material can be reduced. A total of continuous distances of the welded portions on the joining surface, are 0.4 times to 0.8 times a length from an end of the tip to another end thereof, whereby joining strength of the welded portion can be assured. Peeling at the tip or falling-off of the tip due to thermal stress can be less likely to occur, whereby durability of the ground electrode can be improved.

公开(公告)号：US09431731B2

公开(公告)日：2016-08-30

申请号：US14246336

申请日：2014-04-07

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Takehiro Oba ,  Yuichi Yamada ,  Shingo Ito ,  Takeshi Nanbu ,  Hironari Furuta ,  Makoto Kume

IPC: H01R11/18 ,  H01R11/01 ,  G01N27/406 ,  H01R13/24

CPC classification number: H01R11/18 ,  G01N27/4062 ,  H01R11/01 ,  H01R13/2442

Abstract: A sensor includes a detection element; a plurality of terminal members, each of the terminal members including an elongated frame body portion extending along the axial direction, an element contact portion in elastic contact with an electrode terminal, and a folded portion connecting the frame body portion and the element contact portion; and a separator. The element contact portion of each of the terminal members has a turning portion which turns inward with respect to the width direction between the folded portion and a contact portion in contact with an electrode terminal. In those two of the terminal members which are adjacent to each other along the width direction, the distance along the width direction between the contact portions is smaller than the distance along the width direction between the frame body portions.

Abstract translation: 传感器包括检测元件; 多个端子构件，每个端子构件包括沿轴向延伸的细长框架体部分，与电极端子弹性接触的元件接触部分和连接框架本体部分和元件接触部分的折叠部分; 和分隔符。 每个端子构件的元件接触部分具有相对于折叠部分和与电极端子接触的接触部分之间的宽度方向向内倾斜的转动部分。 在沿着宽度方向彼此相邻的那些端子构件中，接触部之间沿着宽度方向的距离小于框体部之间沿着宽度方向的距离。