公开(公告)号：US20150162725A1

公开(公告)日：2015-06-11

申请号：US14538262

申请日：2014-11-11

Applicant: NGK Spark Plug Co., LTD.

Inventor： Tatsunori YAMADA ,  Yusuke FUJI ,  Tomoyuki IGARASHI ,  Kei TAKAHASHI

IPC: H01T13/32

CPC classification number: H01T13/32

Abstract: A spark plug includes: an insulator having an axial hole; a conductive member disposed around the insulator; a center electrode disposed inside the axial hole, having a bar shape extending in the axial direction, and located on a rear end side with respect to a front end of the conductive member; a ground electrode forming a spark gap between the ground electrode and the center electrode; and a connection part including a plurality of spokes extending in a radial direction whose inner ends are connected to the ground electrode, and connecting the conductive member to the ground electrode. The connection part includes a joint part that is jointed to an inner surface of the conductive member, and the ground electrode has at least one of a notch and a groove at a position that is different from a position connected to the spokes in a circumferential direction.

Abstract translation: 火花塞包括：具有轴向孔的绝缘体; 设置在所述绝缘体周围的导电构件; 设置在所述轴向孔内的中心电极，所述中心电极具有沿轴向延伸的杆状，并且相对于所述导电构件的前端位于后端侧; 在接地电极和中心电极之间形成火花隙的接地电极; 以及连接部，其包括在其内端与接地电极连接的径向延伸的多个辐条，并且将导电部件连接到接地电极。 连接部包括与导电部件的内表面接合的接合部，并且接地电极具有与沿着圆周方向连接到辐条的位置不同的位置的凹口和凹槽中的至少一个 。

公开(公告)号：US20180202886A1

公开(公告)日：2018-07-19

申请号：US15743744

申请日：2016-07-08

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Tatsunori YAMADA ,  Shunsuke TSUGA ,  Yusuke FUJI ,  Junki IWABUCHI ,  Daiki GOTO

IPC: G01L23/18 ,  F02B77/08

CPC classification number: G01L23/18 ,  F02B77/085 ,  F02F1/24 ,  G01L19/0681 ,  G01L23/08 ,  G01L23/10

Abstract: A pressure sensor includes: a diaphragm joined to a front side of a housing via a joint portion; a sensor portion; a connection portion connecting the diaphragm to the sensor portion; and a heat receiving portion disposed at the front side of the diaphragm. When: a minimum value of an area of a minimum inclusion region which is a virtual region, which include a cross-section of a portion from the heat receiving portion to the diaphragm and of which an overall length of a contour become minimum on a cross-section perpendicular to the axial line, is defined as a connection area Sn; and an area of a region surrounded by the joint portion on a projection plane perpendicular to the axial line when the diaphragm and the heat receiving portion are projected onto the projection plane is defined as a diaphragm effective area Sd, (Sn/Sd)≤0.25 is satisfied.