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公开(公告)号：US09976934B2
公开(公告)日：2018-05-22
申请号：US14991572
申请日：2016-01-08
Applicant: NGK Spark Plug Co., LTD.
Inventor： Takehiro Oba , Yuichi Yamada , Kunihiko Yonezu
IPC: G01M15/02 , F02D41/14 , G01N27/409 , G01N27/41 , G01N27/407
CPC classification number: G01M15/02 , F02D41/1454 , G01N27/407 , G01N27/409 , G01N27/41
Abstract: A sensor includes: a detection element; a separator including an insertion portion into which a rear side of the detection element is inserted, and a plurality of terminal housing portions that are disposed surrounding a circumference of the insertion portion around an axial direction, and extend in the axial direction; and a connection terminal that is electrically connected to an electrical connection terminal portion to form a current path. The connection terminal includes a frame body portion and an element contact portion. The sensor further includes a first regulation portion that is located at a position closer to the detection element relative to the frame body portion, in a direction in which a first main surface and a second main surface oppose each other, and regulates the movement of the frame body portion in a direction approaching the detection element.
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公开(公告)号：US09948070B2
公开(公告)日：2018-04-17
申请号：US15546875
申请日：2016-01-29
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Takuya Kawade , Yuichi Yamada
CPC classification number: H01T13/39 , C22C1/0466 , H01T13/06 , H01T13/32 , H01T21/02
Abstract: A spark plug includes an insulator, a metal shell surrounding the insulator, a center electrode disposed in the insulator, with a front end thereof exposed outside from the insulator, a ground electrode having a fixed end portion fixed to the metal shell and a free end portion located at a predetermined gap apart from the center electrode, and a coating part formed of noble metal or noble metal alloy so as to cover at least a region of an inner surface of the ground electrode from a first intersection to a second intersection, where the first intersection is an intersection at which an imaginary line extending from an outer circumference of the center electrode intersects the ground electrode; and the second intersection is an intersection at which an imaginary plane extending through a midpoint of the predetermined gap in parallel with the front end intersects the ground electrode.
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公开(公告)号：US09689834B2
公开(公告)日：2017-06-27
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: G01N7/00 , G01N27/407 , G01N33/00
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°.
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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.
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15.发明授权公开(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.
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Patent Agency Ranking
公开(公告)号：US09548592B2
公开(公告)日：2017-01-17
申请号：US14582801
申请日：2014-12-24
Applicant: NGK Spark Plug Co., LTD.
Inventor： Tadatoshi Fujino , Kenji Ban , Yuichi Yamada
Abstract: A sparkplug includes: an insulator with an axial hole extending along an axial line; a metal shell covering the insulator; and a shelf part inside the metal shell. The insulator includes a second column part formed in the front end side of a tapering part. When a volume surrounded by a first plane that passes through the front end of the shelf part of the metal shell and is orthogonal to the axial line, a curved surface extending from an outer circumference of the second column part, and an outer circumferential surface of the insulator is defined as A, and a volume surrounded by the first plane, the curved surface, a second plane that passes through the front end of the metal shell and is orthogonal to the axial line, and the axial hole of the insulator is defined as B, a relational expression 0.9≦A/B≦2.4 is satisfied.
Abstract translation: 火花塞包括：具有沿轴线延伸的轴向孔的绝缘体; 覆盖绝缘体的金属壳; 和金属外壳内的搁板部分。 绝缘体包括形成在锥形部的前端侧的第二柱部。 当由第一平面包围的体积通过金属壳的搁架部分的前端并且与轴线正交时，从第二柱部分的外圆周延伸的弯曲表面和 绝缘体被定义为A，由第一平面，弯曲表面，穿过金属壳的前端并与轴线正交并与绝缘体正交的第二平面所围绕的体积和绝缘体的轴向孔被限定 作为B，满足关系式0.9≤A/B≤2.4。
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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。
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公开(公告)号：US10581226B2
公开(公告)日：2020-03-03
申请号：US15882368
申请日：2018-01-29
Applicant: NGK Spark Plug Co., LTD.
Inventor： Kohei Usami , Yuichi Yamada
Abstract: A spark plug includes: a center electrode; an insulator having a through hole around a part of the center electrode; and a metal shell holding the insulator from an outer peripheral side thereof. The metal shell includes a shelf portion that projects radially inward. The insulator includes an engagement portion engaged with the shelf portion from the front side, and a front end portion at the front side with respect to a front end of the metal shell. The front end portion has an outer diameter larger than an inner diameter of the metal shell at the front side with respect to the shelf portion. The front end portion of the insulator has a diameter-enlarged portion at which a diameter of the through hole increases and which is spaced apart from an outer peripheral surface of the center electrode.
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公开(公告)号：US20180287349A1
公开(公告)日：2018-10-04
申请号：US15882368
申请日：2018-01-29
Applicant: NGK Spark Plug Co., LTD.
Inventor： Kohei Usami , Yuichi Yamada
Abstract: A spark plug includes: a center electrode; an insulator having a through hole around a part of the center electrode; and a metal shell holding the insulator from an outer peripheral side thereof. The metal shell includes a shelf portion that projects radially inward. The insulator includes an engagement portion engaged with the shelf portion from the front side, and a front end portion at the front side with respect to a front end of the metal shell. The front end portion has an outer diameter larger than an inner diameter of the metal shell at the front side with respect to the shelf portion. The front end portion of the insulator has a diameter-enlarged portion at which a diameter of the through hole increases and which is spaced apart from an outer peripheral surface of the center electrode.
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公开(公告)号：US09705291B2
公开(公告)日：2017-07-11
申请号：US15072820
申请日：2016-03-17
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Yuichi Yamada , Takuya Kawade
Abstract: An ignition plug having a ground electrode that includes a base material layer and an erosion-resistant layer having a thermal conductivity of 40 w/m·K or more. The erosion-resistant layer extends at least from the center-electrode-facing portion to a location closer to the fixed end than a front end of the center electrode and 0.2 mm≦thickness t1 of the erosion-resistant layer≦thickness T of the ground electrode 30−0.6 mm is satisfied.
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